{"title":"Bike Cranksets on Sale","description":"\u003cdiv class=\"collection-header\"\u003e\u003cp\u003eThe crankset sits at the center of your drivetrain — the point where effort becomes motion, and where power meter integration has made the component more technically significant than ever. \u003cstrong\u003eBike Cranksets on Sale\u003c\/strong\u003e at RA Cycles covers 252 products at reduced pricing across Shimano, SRAM, Campagnolo, and SRM: from entry-level groupset cranksets to professional-spec power meter systems. The Shimano lineup spans 105, Ultegra, Dura-Ace, and GRX for gravel and XT for mountain. SRAM covers Rival through Red AXS, with multiple DUB-standard options including integrated power meters. Campagnolo is represented with Super Record 13 WRL — with and without power — and Chorus 12-speed. SRM's Origin and Science PM9 cranksets are dedicated power meter systems built around THM and Campagnolo interfaces, with a precision measurement reputation that predates most other brands in this category. Whether you're upgrading a groupset or sourcing a standalone crankset, this collection spans every standard.\u003c\/p\u003e\u003c\/div\u003e","products":[{"product_id":"campagnolo-bora-ultra-11s-ultra-torque-carbon-crankset","title":"Campagnolo Bora Ultra 11s Ultra-Torque Carbon Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eCampagnolo Bora Ultra 11s Ultra-Torque Carbon Crankset\u003c\/strong\u003e sits near the top of Campagnolo's road crankset hierarchy, built for riders who demand Italian craftsmanship and race-proven performance in a 2x drivetrain. It pairs a full carbon construction with Campagnolo's Ultra-Torque spindle system — an approach designed to deliver stiff, precise power transfer while keeping weight in check. This is a crankset for serious road riders who want components that keep pace with their ambitions, whether that's long mountain stages or fast-paced group rides.\u003c\/p\u003e\n\n\u003cp\u003eThe Ultra-Torque system uses a two-piece spindle design, with each crank arm integrated into half of the hollow steel axle. The two halves join at the center with a Hirth coupling — a serrated interface that Campagnolo designed to eliminate flex and maintain consistent alignment under hard efforts. The carbon arms are shaped to be laterally stiff where it matters for sprinting and climbing, while the overall design keeps rotational mass low. Available in both a 53x39 standard configuration and a 54x42 option for riders who prefer larger gearing, with crank arm lengths spanning 170mm to 175mm to suit a range of fit needs.\u003c\/p\u003e\n\n\u003ch3\u003eCampagnolo Bora Ultra 11s Ultra-Torque Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003eCompatibility: Campagnolo 11-speed drivetrains\u003c\/li\u003e\n  \u003cli\u003eDrivetrain type: 2x road\u003c\/li\u003e\n  \u003cli\u003eSpindle system: Ultra-Torque with Hirth coupling\u003c\/li\u003e\n  \u003cli\u003eCrank arm material: Carbon fiber\u003c\/li\u003e\n  \u003cli\u003eChainring options: 53x39, 54x42\u003c\/li\u003e\n  \u003cli\u003eCrank arm lengths: 170mm, 172.5mm, 175mm\u003c\/li\u003e\n  \u003cli\u003eSpindle material: Hollow steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesign Benefits\u003c\/h3\u003e\n\u003col class=\"design_benefits\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHirth Coupling Precision\u003c\/strong\u003e — The serrated Hirth joint at the spindle center is engineered to lock both crank halves into exact alignment on every installation, reducing the micro-flex that can rob power and cause premature drivetrain wear over long miles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon Construction for Road Performance\u003c\/strong\u003e — Full carbon crank arms are shaped to prioritize lateral stiffness during out-of-saddle efforts while remaining compliant enough to handle the demands of endurance road riding — a balance that synthetic materials make possible in a way aluminum cannot.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGearing Versatility\u003c\/strong\u003e — The availability of both 53x39 and 54x42 chainring combinations means you can configure the crankset to match your riding terrain and cadence preferences without needing to source aftermarket rings from the start.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e","brand":"Campagnolo","offers":[{"title":"53x39 \/ No Color \/ 170mm","offer_id":43508702183468,"sku":"10044301","price":600.0,"currency_code":"USD","in_stock":false},{"title":"54x42 \/ No Color \/ 170mm","offer_id":43508702216236,"sku":"10044304","price":600.0,"currency_code":"USD","in_stock":true},{"title":"53x39 \/ No Color \/ 172.5mm","offer_id":43508702249004,"sku":"10044302","price":600.0,"currency_code":"USD","in_stock":false},{"title":"53x39 \/ No Color \/ 175mm","offer_id":43508702281772,"sku":"10044303","price":600.0,"currency_code":"USD","in_stock":true}]},{"product_id":"campagnolo-h11-11s-crankset","title":"Campagnolo H11 11s Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eDisc brake road bikes introduced a geometry problem that most crankset designers ignored — the \u003cstrong\u003eCampagnolo H11 11s Crankset\u003c\/strong\u003e didn't. When thru-axle disc frames widened the rear spacing, the chainline shifted relative to the cassette. Campagnolo's answer was precise: the same proven carbon four-arm crank architecture, but with chainrings machined 5mm further outboard to restore the correct chainline geometry your drivetrain depends on.\u003c\/p\u003e\n\n\u003cp\u003eThe result is a disc-specific crankset that preserves what Campagnolo 11-speed riders already know — a 145.5mm Q-factor, Ultra-Torque bearing integration, and the eight-bolt ring mounting system with four bolts per ring. The 52x36 mid-compact gearing suits a wide range of road riding, and the chainrings carry the same ramp-and-pin shifting profiles found across the 11-speed road lineup. Bottom bracket compatibility stays the same as rim-brake builds, so you're not locked into anything new or unusual.\u003c\/p\u003e\n\n\u003ch3\u003eCampagnolo H11 11s Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Campagnolo 11-speed disc brake drivetrains\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainring configuration:\u003c\/strong\u003e 52x36 (mid-compact)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrank arm lengths:\u003c\/strong\u003e 172.5mm, 175mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ-factor:\u003c\/strong\u003e 145.5mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBottom bracket interface:\u003c\/strong\u003e Ultra-Torque compatible\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Campagnolo","offers":[{"title":"52x36 \/ Black \/ 172.5mm","offer_id":43508868907052,"sku":"FC18-HP262C","price":450.0,"currency_code":"USD","in_stock":true},{"title":"52x36 \/ Black \/ 175mm","offer_id":43508868939820,"sku":"FC18-HP562C","price":450.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/campagnolo-h11-11s-crankset-3435513.jpg?v=1771301950"},{"product_id":"campagnolo-record-11s-ultra-torque-crankset","title":"Campagnolo Record 11s Ultra-Torque Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eCampagnolo Record 11s Ultra-Torque Crankset\u003c\/strong\u003e is built around a full-carbon construction — unidirectional and multidirectional layers combined in hollow arms — that keeps weight down without compromising the stiffness you need when the road pitches up or a sprint opens up.\u003c\/p\u003e\n\n\u003cp\u003eThe chainrings are where the engineering gets specific. Campagnolo redesigned the tooth profile for 11-speed compatibility, with two diametrically opposed upshift sectors and two downshift sectors — a geometry intended to make shifting response immediate in both directions. Hard anodization gives the rings measurably better resistance to wear and corrosion over time. The Ultra-Torque axle system uses integrated semi-axles in each crank arm, joining at the bottom bracket with USB bearings designed for minimal friction under sustained load.\u003c\/p\u003e\n\n\u003ch3\u003eCampagnolo Record 11s Ultra-Torque Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrank material:\u003c\/strong\u003e Full-carbon, unidirectional and multidirectional construction, hollow arms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainrings:\u003c\/strong\u003e Light alloy with ESP Actuation System, hard anodized finish\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLarge chainring:\u003c\/strong\u003e 8 chain-pick-up pins\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e USB (Ultra Smooth Bearings)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBottom bracket compatibility:\u003c\/strong\u003e Requires Ultra-Torque BB cups (sold separately)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable chainring option:\u003c\/strong\u003e 53x39\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrank arm length:\u003c\/strong\u003e 177.5mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Campagnolo","offers":[{"title":"177.5mm \/ 53x39","offer_id":43508916387884,"sku":"10043676","price":475.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/campagnolo-record-11s-ultra-torque-crankset-4330980.jpg?v=1771301894"},{"product_id":"pioneer-shimano-dura-ace-9000-left-crank-arm-power-meter","title":"Pioneer Shimano Dura-Ace 9000 Left Crank Arm Power Meter","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003ePioneer Shimano Dura-Ace 9000 Left Crank Arm Power Meter\u003c\/strong\u003e is a direct replacement for your existing Dura-Ace 9000 left arm — same spider, same feel, but with strain gauges, an accelerometer, ANT+ transmitter, and a CR2032 battery built into the inside of the arm. If you already run a 9000 crankset, this is one of the most straightforward ways to add power measurement to your setup without replacing the whole drivetrain.\u003c\/p\u003e\n\u003cp\u003eThe unit adds 22g and 8.8mm of depth to the back of the arm compared to a stock left crank — total arm weight comes in at 200g. Pioneer rates accuracy at ±2%. The accelerometer wakes the meter automatically once the crank begins to turn, so there's no manual activation required. The ANT+ signal is compatible with any head unit that reads ANT+ power data. One clearance note worth checking before you buy: if your frame runs an under-bottom-bracket brake cable, Pioneer recommends a minimum of 10mm of clearance on the back of the arm.\u003c\/p\u003e\n\u003ch3\u003ePioneer Shimano Dura-Ace 9000 Left Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Shimano Dura-Ace 9000 crankset\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArm weight:\u003c\/strong\u003e 200g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±2%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal:\u003c\/strong\u003e ANT+\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Pioneer","offers":[{"title":"180mm","offer_id":43516209430572,"sku":"SGY-LT90-180","price":219.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/pioneer-shimano-dura-ace-9000-left-crank-arm-power-meter-1369993.jpg?v=1771299257"},{"product_id":"race-face-carbon-crank-boots","title":"Race Face Carbon Crank Boots","description":"\u003cdiv\u003e\n\u003cp\u003eCarbon cranks earn their keep on the trail, but they're also vulnerable to the kind of rock strikes and pedal clip damage that leaves lasting marks. The \u003cstrong\u003eRace Face Carbon Crank Boots\u003c\/strong\u003e are a set of protective covers made from a proprietary plastic blend — designed to absorb impacts and shield your crank arms from chips, scratches, and deeper structural damage before they become a problem.\u003c\/p\u003e\n\n\u003cp\u003eInstallation requires pedal removal, but once fitted, the boots sit snug against the crank arm with no interference to your pedalling. They're available in eight colours — black, blue, green, grey, pink, red, turquoise, and yellow — so you can match them to your build or add a bit of contrast.\u003c\/p\u003e\n\n\u003ch3\u003eRace Face Carbon Crank Boots Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Proprietary plastic blend\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible with:\u003c\/strong\u003e Race Face carbon crank arms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColours available:\u003c\/strong\u003e Black, Blue, Green, Grey, Pink, Red, Turquoise, Yellow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation note:\u003c\/strong\u003e Pedals must be removed for fitting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Race Face","offers":[{"title":"Black","offer_id":43517299556396,"sku":"A10066BLK","price":5.99,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":43517299589164,"sku":"A10066BLU","price":5.99,"currency_code":"USD","in_stock":true},{"title":"Green","offer_id":43517299621932,"sku":"A10066GRN","price":5.99,"currency_code":"USD","in_stock":true},{"title":"Grey","offer_id":43517299654700,"sku":"A10066GRY","price":5.99,"currency_code":"USD","in_stock":false},{"title":"Pink","offer_id":43517299687468,"sku":"A10066PIN","price":5.99,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":43517299720236,"sku":"A10066RED","price":5.99,"currency_code":"USD","in_stock":false},{"title":"Turquoise","offer_id":43517299753004,"sku":"A10066TURQ","price":5.99,"currency_code":"USD","in_stock":true},{"title":"Yellow","offer_id":43517299785772,"sku":"A10066YEL","price":5.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/race-face-carbon-crank-boots-4890349.jpg?v=1771298883"},{"product_id":"race-face-next-sl-g4-crank-boots","title":"Race Face Next SL G4 Crank Boots","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRace Face Next SL G4 Crank Boots\u003c\/strong\u003e are a set of protective covers designed to shield your Next SL G4 crankarms from rock strikes, log impacts, and the general abuse that comes with aggressive trail riding. Made from a proprietary plastic blend, they absorb and deflect impacts that would otherwise scratch or crack a carbon crankarm. Available in five colours — black, blue, orange, red, and yellow — they let you match or contrast your existing build without much fuss.\u003c\/p\u003e\n\n\u003cp\u003eInstallation requires removing your pedals first. Once fitted, they sit flush over the crankarm ends and stay put through the kind of riding that makes them necessary in the first place. A small detail that extends the life of an expensive component.\u003c\/p\u003e\n\n\u003ch3\u003eRace Face Next SL G4 Crank Boots Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Race Face Next SL G4 crankset\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Proprietary plastic blend\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColours:\u003c\/strong\u003e Black, Blue, Orange, Red, Yellow\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInstallation note:\u003c\/strong\u003e Pedals must be removed for fitting\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Race Face","offers":[{"title":"Black","offer_id":43517299982380,"sku":"A10096BLK","price":5.99,"currency_code":"USD","in_stock":false},{"title":"Blue","offer_id":43517300015148,"sku":"A10096BLU","price":5.99,"currency_code":"USD","in_stock":true},{"title":"Orange","offer_id":43517300047916,"sku":"A10096ORA021","price":5.99,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":43517300080684,"sku":"A10096RED","price":5.99,"currency_code":"USD","in_stock":true},{"title":"Yellow","offer_id":43517300113452,"sku":"A10096YEL","price":5.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/race-face-next-sl-g4-crank-boots-8567547.jpg?v=1771298881"},{"product_id":"rotor-2inpower-crank-arms-for-direct-mount-chainrings","title":"Rotor 2INPower Crank Arms for Direct Mount Chainrings","description":"\u003cp\u003eRotor’s 2INPower  Crank for Direct Mount Chainrings  power  meter is light and accurate thanks to placement of four strain gauges in the  thru-axle and two in the right crankarm. This allows it to measure both left  and right power as well as provide incredibly precise metrics by which you can  analyze and perfect your pedal stroke. Accuracy is a clamed 1-1.5%.\u003c\/p\u003e\n\u003cp\u003eLike all good power  systems these days, the 2INPower sends out both ANT+ and Bluetooth Smart (BTLE)  signals simultaneously. These can be picked up by ANT+ head units, Bluetooth  head units, smartphones, tablets, and computers (check yours for specific app  and program compatibility). Thanks to the Bluetooth signal, you can utilize  Rotor’s Torque 360 metrics for dialing in your pedal stroke as well as their  OCA software for determining what, position your Rotor Oval chainring should  sit out for optimal power transfer. Of course, if you’re fixed on round, you  don’t need to utilize this program. \u003c\/p\u003e\n\u003cp\u003eRotor’s hollow,  oversized thru-axle means  you can use  this crank with Rotor’s Universal Bottom Bracket (UBB) concept, meaning it is  compatible with: English-threaded, Italian-threaded, BB30, PF30, PF30 BBright,  and BB386 bottom bracket standards. It also means that Rotor has the space to  install circuitry, strain gauges, and a battery inside. Same goes for the  hollow, Trinity-drilled, aluminum crankarms, which house more strain gauges.\u003c\/p\u003e\n\u003cp\u003eThe cranks are light  and stiff, and come with a lock ring, but not chainrings. They also come with  the requisite lock ring tool. You’ll need to choose whether you go with Rotor’s  one-piece Direct Mount (DM) Round or Oval chainrings or Aldhu four-arm spider. In  all cases, the spider is splined and slides onto the inside of the right  crankarm from the left side and is secured to the splines with the lock ring. This  is light, stiff, and very effective. \u003c\/p\u003e\n\u003cp\u003eThe axle-mounted  Lithium-Ion battery comes with a charge on it. You might want to fully charge  before riding. It should last about 250 hours on a charge. The charge cable is  included, is four feet long and works very much like a computer charging cable  with a magnetic mount on the crank side and a USB connector on the power side. \u003c\/p\u003e\n\u003cp\u003eThe crank comes in  sizes as short as 165mm and as long as 175mm. The Q-Factor is 147.5mm. The  chain line is 43.5mm. It has a waterproof rating of IPX7.\u003c\/p\u003e\n\u003cp\u003eThe crankset weighs  596g without rings. 775g with a one-piece chainring set. \u003c\/p\u003e","brand":"Rotor","offers":[{"title":"175mm","offer_id":43517657415724,"sku":"C13-031-21010-001","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/38795.jpg?v=1765915977"},{"product_id":"rotor-2inpower-mtb-crank-arms-for-direct-mount-chainrings","title":"Rotor 2INPower MTB Crank Arms for Direct Mount Chainrings","description":"\u003cp\u003eThe \u003cstrong\u003eRotor 2INPower MTB Crank Arms for Direct Mount Chainrings\u003c\/strong\u003e put dual-sided power measurement inside the crank itself — electronics housed within the thru-axle and right arm, keeping the unit clean, protected, and out of the way of trail debris. That internal design makes the IPX7 waterproof rating achievable without external pods or exposed hardware, and it opens up genuine flexibility in chainring selection for mountain riding.\u003c\/p\u003e\n\u003cp\u003eCompatibility is limited to Rotor's own one-piece direct mount rings — designed for the Hawk and Raptor platforms — which go as small as 26 teeth. If you're running Rotor's oval chainrings, the precise spline interface lets you dial in the exact clocking position to align the ring's high and low points with your pedal stroke. Rotor's Torque 360 and OCA analysis software handles that optimization across smartphones, tablets, and computers. The 30mm spindle works with BB30, PF30, BB89, BB92, and English-threaded bottom brackets, and the crank is \u003cstrong\u003eBoost-compatible\u003c\/strong\u003e — 169.5mm Q-factor and 52mm chainline. Chainring is sold separately. The crank ships without a bottom bracket; you'll need to source the appropriate bracket, bearings, or spacers for your frame.\u003c\/p\u003e\n\u003ch3\u003eRotor 2INPower MTB Crank Arms Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003eClaimed accuracy: ±1–1.5%\u003c\/li\u003e\n\u003cli\u003eTransmission: simultaneous ANT+ and Bluetooth Smart (BLE)\u003c\/li\u003e\n\u003cli\u003eBattery: axle-mounted lithium-ion, ~250-hour runtime; magnetic USB charge cable included\u003c\/li\u003e\n\u003cli\u003eSpindle: 30mm — compatible with BB30, PF30, BB89, BB92, English threaded\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rotor","offers":[{"title":"175mm","offer_id":43517657546796,"sku":"C13-029-21010-002","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-2inpower-mtb-crank-arms-for-direct-mount-chainrings-3038345.jpg?v=1771298709"},{"product_id":"rotor-aldhu-3d-crank-arms","title":"Rotor Aldhu Alloy Crank Arms","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor Aldhu Alloy Crank Arms\u003c\/strong\u003e are built from 7055 aluminium and CNC-machined down to the minimum material needed to keep them stiff and light — Rotor's Trinity drilling hollows out the arms without sacrificing power transfer where it matters. Named after Alpe d'Huez, the Aldhu system was designed with climbing in mind: low weight, high rigidity, and a modular build that gives you real flexibility in how you set up your drivetrain.\u003c\/p\u003e\n\n\u003cp\u003eThese are crank arms only — part of Rotor's component system that separates the arms, spindle, spider, and chainrings into individual purchases. That modularity is the point. The spider mounts onto splines on the bottom bracket spindle, the right arm onto its own spline set, and the whole assembly locks to the axle with a degree-by-degree adjustment range — useful when you're dialling in chainring position, particularly with Rotor's Q-rings. Compatible bottom bracket standards include BB30, BB386, PF30, PF4130, PF4630, and UBB30. Arms are secured with bolts tightened via a 10mm hex wrench.\u003c\/p\u003e\n\n\u003ch3\u003eRotor Aldhu Alloy Crank Arms Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 7055 aluminium, CNC-machined with Trinity drilling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable lengths:\u003c\/strong\u003e 150mm, 155mm, 160mm, 165mm, 170mm, 172.5mm, 175mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBB compatibility:\u003c\/strong\u003e BB30, BB386, PF30, PF4130, PF4630, UBB30\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBolt fitting:\u003c\/strong\u003e 10mm hex wrench\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Spindle, spider, chainrings, and bottom bracket sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"Black \/ 150mm","offer_id":43517795205164,"sku":"C02-102-11010-0","price":199.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 155mm","offer_id":43517795237932,"sku":"C02-102-13010-0","price":199.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 160mm","offer_id":43517795270700,"sku":"C02-102-15010-0","price":199.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 165mm","offer_id":43517795303468,"sku":"C02-102-17010-0","price":199.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 170mm","offer_id":43517795336236,"sku":"C02-102-19010-0","price":199.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 172.5mm","offer_id":43517795369004,"sku":"C02-102-20010-0","price":199.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 175mm","offer_id":43517795401772,"sku":"C02-102-21010-0","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-aldhu-alloy-crank-arms-9275489.jpg?v=1771298648"},{"product_id":"rotor-inpower-crank-arms-for-direct-mount-chainrings","title":"Rotor INPower Crank Arms for Direct Mount Chainrings","description":"\u003cp\u003e\u003cstrong\u003eRotor INPower Crank Arms for Direct Mount Chainrings\u003c\/strong\u003e bring left-side power measurement into Rotor's modular crank ecosystem — giving you accurate training and racing data without committing to a complete crankset overhaul. Designed for riders who already run Rotor direct mount chainrings or want the flexibility to mix and match, these arms slot cleanly into an existing build. The INPower system measures power at the left crank arm, then doubles the reading to estimate total output — a proven, reliable approach used by amateur and professional riders alike.\u003c\/p\u003e\n\u003cp\u003eThe crank arms themselves are forged and machined from aluminum, reflecting Rotor's longstanding focus on stiffness-to-weight in their drivetrain components. The integrated strain gauge sits inside the left arm, keeping the measurement system protected from impacts and contamination that can compromise external sensor pods. Three crank lengths — 165mm, 172.5mm, and 175mm — cover a wide range of rider geometries, and the direct mount interface means you can run any compatible Rotor chainring configuration, from compact to wide-range setups. Connectivity is ANT+ and Bluetooth Smart, so the data reaches your head unit or training app without additional pairing steps.\u003c\/p\u003e\n\u003ch3\u003eRotor INPower Crank Arms for Direct Mount Chainrings — Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003ePower measurement: Left-side with doubles algorithm\u003c\/li\u003e\n\u003cli\u003eChainring compatibility: Rotor direct mount\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eConnectivity: ANT+ and Bluetooth Smart dual broadcast\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensor location: Integrated inside left crank arm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDesign Benefits\u003c\/h3\u003e\n\u003col class=\"design_benefits\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular compatibility with Rotor's direct mount system\u003c\/strong\u003e — because the chainring interface is separate from the arm itself, you can run 1x or 2x setups and swap ring sizes without replacing the power meter. That flexibility makes these arms a sensible long-term investment for riders who change gearing between seasons or disciplines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternally housed strain gauge\u003c\/strong\u003e — locating the sensor inside the crank arm rather than on an external pod reduces the risk of accidental damage during installation, group rides, or criterium racing where mechanical contact is a real concern. It also keeps the profile clean and adds no meaningful bulk to the drivetrain.\u003c\/li\u003e\n\u003cli\u003eDual-protocol wireless broadcast means the INPower arms communicate with virtually any modern cycling computer or training platform simultaneously — useful for riders who pair a head unit with a heart rate or training app at the same time.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Rotor","offers":[{"title":"172.5mm","offer_id":43517795762220,"sku":"C13-032-20010-000","price":299.99,"currency_code":"USD","in_stock":true},{"title":"175mm","offer_id":43517795794988,"sku":"C13-032-21010-000","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-inpower-crank-arms-for-direct-mount-chainrings-3084077.jpg?v=1771298649"},{"product_id":"rotor-inpower-mtb-crank-arms-for-direct-mount-chainrings","title":"Rotor INPower MTB Crank Arms for Direct Mount Chainrings","description":"\u003cp\u003eThe \u003cstrong\u003eRotor INPower MTB Crank Arms for Direct Mount Chainrings\u003c\/strong\u003e put a left-side power meter directly into the cranks you're already riding — no pedal swaps, no spider replacements, just clean integration built around a left-arm axle that houses four strain gauges in two opposing pairs. That placement keeps the sensing hardware inside the axle where trail debris, mud, and impacts can't reach it. An IP67 waterproof rating means you're not cutting rides short when conditions turn.\u003c\/p\u003e\n\u003cp\u003eThe INPower transmits power, cadence, torque, and pedal smoothness data over both ANT+ and Bluetooth, pairing with any standard cycling computer. Pair it with the Rotor Power App and you get access to Torque 360 and Optimum Chainring Angle data — metrics designed to help you understand and refine your pedaling biomechanics over time, not just track numbers. Available in 165mm and 175mm crank lengths to match your setup, and designed to accept direct mount chainrings.\u003c\/p\u003e\n\u003ch3\u003eRotor INPower MTB Crank Arms Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement:\u003c\/strong\u003e Left-arm power, cadence, torque, pedal smoothness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrain gauges:\u003c\/strong\u003e Four gauges (two opposing pairs) located in the crank axle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e ANT+ and Bluetooth dual transmission\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproof rating:\u003c\/strong\u003e IP67\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChainring compatibility:\u003c\/strong\u003e Direct mount\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rotor","offers":[{"title":"165mm","offer_id":43517796352044,"sku":"C13-033-17010-000","price":249.99,"currency_code":"USD","in_stock":false},{"title":"175mm","offer_id":43517796384812,"sku":"C13-033-21010-000","price":249.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-inpower-mtb-crank-arms-for-direct-mount-chainrings-2845242.jpg?v=1771298648"},{"product_id":"rotor-aldhu-carbon-crank-arms","title":"Rotor Aldhu Carbon Crank Arms","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor Aldhu Carbon Crank Arms\u003c\/strong\u003e strip roughly 100 grams from the aluminum Aldhu without compromising the modular architecture that makes the platform so versatile. Carbon construction increases both vertical and horizontal stiffness compared to the alloy version — meaning more of your pedaling force reaches the drivetrain rather than flexing away into the crank body.\u003c\/p\u003e\n\n\u003cp\u003eRotor's Twin Leg design addresses a specific problem: power lost to axle torsion when force is applied through the left pedal. By balancing the load more evenly across the structure, the arms are designed to reduce those losses and keep your output consistent through the full pedal stroke. The 30mm axle interface is built for straightforward assembly with a secure, rattle-free fit, and full compatibility with Rotor's 1x and 2x direct-mount chainrings means you can configure the crank to suit your gearing needs without adapters or compromises.\u003c\/p\u003e\n\n\u003ch3\u003eRotor Aldhu Carbon Crank Arms Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Carbon fiber\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAxle interface:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainring compatibility:\u003c\/strong\u003e Rotor 1x and 2x direct-mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable lengths:\u003c\/strong\u003e 155mm, 165mm, 170mm, 172.5mm, 175mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight savings:\u003c\/strong\u003e Approximately 100g lighter than aluminum Aldhu arms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"Black \/ 155mm","offer_id":43517797171244,"sku":"C02-117-13010-0","price":299.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 165mm","offer_id":43517797204012,"sku":"C02-117-17010-0","price":299.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 170mm","offer_id":43517797236780,"sku":"C02-117-19010-0","price":299.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 172.5mm","offer_id":43517797302316,"sku":"C02-117-20010-0","price":299.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 175mm","offer_id":43517797400620,"sku":"C02-117-21010-0","price":299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-aldhu-carbon-crank-arms-9134306.jpg?v=1771298649"},{"product_id":"rotor-r-hawk-r-raptor-axle-for-boost-spindle","title":"Rotor R-Hawk \/ R-Raptor Axle for Boost Spindle","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor R-Hawk \/ R-Raptor Axle for Boost Spindle\u003c\/strong\u003e is the dedicated replacement or upgrade spindle for riders running Rotor's R-Hawk or R-Raptor crankarms — machined from T6 7075 aluminium at 30mm diameter, it delivers the structural backbone these cranks are designed around. This is a Boost-spacing axle, giving you a 52.5mm chainline and a Q-factor of 170mm, with an overall width of 158mm measured crank-to-crank.\u003c\/p\u003e\n\n\u003cp\u003eThe axle is built exclusively for use with Rotor crankarms and chainrings. Assembly is straightforward: press the chainring onto the splines, torque the right arm onto the axle, install into your bottom bracket, then fit the left arm and dial out any remaining play. It is compatible with 30mm inner diameter bottom bracket bearings across all standard shell formats that accept a 30mm spindle — \u003cstrong\u003enote that it is not compatible with Trek's BB95 system\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eRotor R-Hawk \/ R-Raptor Axle Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003eSpacing: Boost\u003c\/li\u003e\n  \u003cli\u003eMaterial: T6 7075 CNC-machined aluminium\u003c\/li\u003e\n  \u003cli\u003eSpindle diameter: 30mm\u003c\/li\u003e\n  \u003cli\u003eChainline: 52.5mm | Q-factor: 170mm | Overall width: 158mm\u003c\/li\u003e\n  \u003cli\u003eWeight: 139g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"Default Title","offer_id":43705688686636,"sku":"C02-098-98010-0","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-r-hawk-r-raptor-axle-for-boost-spindle-5816593.jpg?v=1771298647"},{"product_id":"rotor-r-hawk-r-raptor-axle-for-standard-spindle","title":"Rotor R-Hawk \/ R-Raptor Axle for Standard Spindle","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor R-Hawk \/ R-Raptor Axle for Standard Spindle\u003c\/strong\u003e is the dedicated replacement or build-out axle for Rotor's R-Hawk and R-Raptor crankarm systems — a 30mm diameter thru-axle CNC-machined from T6 7075 aluminium, engineered to precise tolerances for clean power transfer and reliable fit. If you're building up a set of R-Hawk or R-Raptor arms from scratch, this is the component that holds it all together.\u003c\/p\u003e\n\n\u003cp\u003eThis Standard spacing axle measures 152mm overall — useful if you're measuring your current crankarm outer-to-outer width to confirm fitment. It delivers a 49.5mm chainline and a 164mm Q-factor, weighing in at 136g. The axle is compatible with 30mm inner diameter bottom bracket bearings and works with all standard 30mm spindle bottom bracket shells. It is \u003cstrong\u003enot compatible with Trek BB95\u003c\/strong\u003e shells. Installation follows a straightforward sequence: press the chainring onto the axle splines, thread on the right arm, install the axle through the bottom bracket, fit the left arm, and dial out any remaining play.\u003c\/p\u003e\n\n\u003ch3\u003eRotor R-Hawk \/ R-Raptor Axle Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003eSpacing: Standard (152mm overall length)\u003c\/li\u003e\n  \u003cli\u003eSpindle diameter: 30mm\u003c\/li\u003e\n  \u003cli\u003eChainline: 49.5mm\u003c\/li\u003e\n  \u003cli\u003eQ-factor: 164mm\u003c\/li\u003e\n  \u003cli\u003eWeight: 136g\u003c\/li\u003e\n  \u003cli\u003eMaterial: T6 7075 CNC-machined aluminium\u003c\/li\u003e\n  \u003cli\u003eCompatible with: 30mm ID bottom bracket bearings — not compatible with Trek BB95\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"Default Title","offer_id":43705688850476,"sku":"C02-098-99010-0","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-r-hawk-r-raptor-axle-for-standard-spindle-9030403.jpg?v=1771298648"},{"product_id":"rotor-r-hawk-crank-arms","title":"Rotor R-Hawk Crank Arms","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor R-Hawk Crank Arms\u003c\/strong\u003e are built around a simple premise: remove every gram that isn't doing structural work. Rotor achieves this through Trinity drilling — three full-length longitudinal bores running through each arm — a technique that strips weight without compromising the stiffness that MTB riding demands. The result is a CNC-machined 7055 aluminum arm that comes in at 665g for the complete setup (175mm arms, standard thru-axle, and 30T Q-Ring).\u003c\/p\u003e\n\n\u003cp\u003eThese are arms only — to complete the crankset you'll need a Rotor axle (available in standard and Boost spacing), a chainring (1x only, with round and Q-Ring options), and crankarm bumpers if your setup calls for them. The 30mm spindle interface is broadly compatible with most bottom bracket standards built around a 30mm spindle, including English-threaded shells of varying widths. Crankarm fixing bolts are included.\u003c\/p\u003e\n\n\u003ch3\u003eRotor R-Hawk Crank Arms Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC-machined 7055 aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 665g (175mm arms, standard thru-axle, 30T Q-Ring)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLengths available:\u003c\/strong\u003e 165mm, 170mm, 175mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle diameter:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrivetrain:\u003c\/strong\u003e 1x only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"Black \/ 165mm","offer_id":43518007115820,"sku":"C02-098-17010-0","price":129.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 170mm","offer_id":43518007214124,"sku":"C02-098-19010-0","price":129.99,"currency_code":"USD","in_stock":true},{"title":"Black \/ 175mm","offer_id":43518007312428,"sku":"C02-098-21010-0","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-r-hawk-crank-arms-4040207.jpg?v=1771298595"},{"product_id":"rotor-r-raptor-crank-arms","title":"Rotor R-Raptor Crank Arms","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor R-Raptor Crank Arms\u003c\/strong\u003e were designed around a straightforward idea: one set of arms that can adapt to multiple bikes, bottom bracket standards, and chainring setups rather than locking you into a single configuration. The arms are CNC-machined from 6082-series aluminum — the same material Rotor uses throughout their component lineup — for a stiffness-to-weight ratio that a traditional crank-and-spider arrangement struggles to match.\u003c\/p\u003e\n\n\u003cp\u003eThese arms are the foundation of the Rotor modular crank system. They attach to a 30mm spindle — compatible with nearly any bottom bracket standard that accepts a 30mm axle, including English-threaded shells of varying widths — and are designed for 1x drivetrains only, with support for both round and Q-ring chainrings. Crankarm fixing bolts are included. To complete the build, you'll need a compatible Rotor axle, your chosen chainring, and optionally crankarm bumpers — all available separately.\u003c\/p\u003e\n\n\u003ch3\u003eRotor R-Raptor Crank Arms Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC-machined 6082 aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle diameter:\u003c\/strong\u003e 30mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainring compatibility:\u003c\/strong\u003e 1x only — round or Q-ring\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAvailable lengths:\u003c\/strong\u003e 165mm, 170mm, 175mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem weight (175mm arms, standard axle, 30T ring):\u003c\/strong\u003e 715g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"Black \/ 165mm","offer_id":43518008295468,"sku":"C02-099-17010-0","price":69.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 170mm","offer_id":43518008328236,"sku":"C02-099-19010-0","price":69.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 175mm","offer_id":43518008361004,"sku":"C02-099-21010-0","price":69.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-r-raptor-crank-arms-8609019.jpg?v=1771298594"},{"product_id":"rotor-r-raptor-bumper-set","title":"Rotor R-Raptor Bumper Set","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor R-Raptor Bumper Set\u003c\/strong\u003e exists for the moments when your crank arm meets something that doesn't move — a rock, a root, a trail-side tree. Molded rubber bumpers wrap the ends of the crank arms, absorbing the kind of strikes that would otherwise chip or crack an unprotected arm over time.\u003c\/p\u003e\n\n\u003cp\u003eThe set comes in two parts. The first piece fits higher up the arm to catch mid-arm impacts; the second goes over the arm ends with an opening for the pedal thread. Together, they give the full length of the arm meaningful coverage. 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These molded rubber bumpers are designed to absorb those strikes before they leave marks on the arms themselves.\u003c\/p\u003e\n\n\u003cp\u003eThe set comes in two pieces per arm. The first wraps around the mid-section of the crank arm to handle impacts when you're deep into technical terrain. The second fits over the arm end, with a cutout for the pedal spindle, protecting the tip where contact is most common. Compatible with Rotor R-Hawk and R-Raptor cranks, they're available in seven colors — so if you want them to disappear into a black build or stand out on a bright setup, there's an option for that.\u003c\/p\u003e\n\n\u003ch3\u003eRotor R-Hawk Bumper Set Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Molded rubber\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e Two-piece set per crank arm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Rotor R-Hawk and R-Raptor crank arms\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColors available:\u003c\/strong\u003e Black, Blue, Green, Orange, Pink, Red, Yellow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"Black","offer_id":43518008819756,"sku":"C02-980-86010-0","price":9.99,"currency_code":"USD","in_stock":true},{"title":"Blue","offer_id":43518008852524,"sku":"C02-980-86010-4","price":9.99,"currency_code":"USD","in_stock":true},{"title":"Green","offer_id":43518008885292,"sku":"C02-980-86010-9","price":9.99,"currency_code":"USD","in_stock":true},{"title":"Orange","offer_id":43518008918060,"sku":"C02-980-86010-10","price":9.99,"currency_code":"USD","in_stock":true},{"title":"Pink","offer_id":43518008950828,"sku":"C02-980-86010-11","price":9.99,"currency_code":"USD","in_stock":true},{"title":"Red","offer_id":43518008983596,"sku":"C02-980-86010-1","price":9.99,"currency_code":"USD","in_stock":true},{"title":"Yellow","offer_id":43518009016364,"sku":"C02-980-86010-8","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/rotor-r-hawk-bumper-set-5825933.jpg?v=1771298597"},{"product_id":"shimano-black-fc-mt900-1-crankset","title":"Shimano Black FC-MT900-1 Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano Black FC-MT900-1 Crankset\u003c\/strong\u003e sits at the top of Shimano's XTR mountain drivetrain family — the go-to choice for riders who demand the highest level of precision and durability from their components. Built around a single-ring setup, it pairs cleanly with 12-speed XTR groupsets and is designed for the demands of trail, enduro, and cross-country riding. If you're running a performance-oriented build and want a crankset that keeps up, this is where Shimano's engineering effort is concentrated.\u003c\/p\u003e\n\n\u003cp\u003eShimano constructs the FC-MT900-1 arms from hollow-forged aluminum, a process that removes material from the inside of the crank arm to reduce weight without compromising stiffness. \u003cstrong\u003eDirect Mount chainring compatibility\u003c\/strong\u003e simplifies ring swaps and ensures tight chainline tolerances — critical when you're pushing hard through technical terrain or grinding out long climbs. 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Redesigned alongside the full R8100 groupset, it delivers the kind of stiff, efficient power transfer you'd expect from a crankset built for long days in the saddle and hard efforts in the bunch. Two chainring options — 50\/34 compact and 52\/36 mid-compact — and five crank arm lengths give you real flexibility to match your gearing and fit to the riding you actually do.\u003c\/p\u003e\n\n\u003cp\u003eShimano's \u003cstrong\u003eHollowglide construction\u003c\/strong\u003e shapes the chainrings to work in precise coordination with the R8100 chain, designed to make front shifts cleaner and more consistent — particularly under load. The crank arms themselves use a hollow forging process that trims rotational weight while keeping the power path between pedal and chainring as rigid as possible. Like the rest of the R8100 groupset, this crankset is built around 12-speed architecture, which means tighter cassette ratios and smoother cadence through a wider gear range when paired with a compatible rear setup. The overall package comes in only marginally heavier than Dura-Ace, making it a credible choice for road racers, gran fondo riders, and anyone running a performance-oriented build.\u003c\/p\u003e\n\n\u003ch3\u003eShimano Ultegra 8100 Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003eGroupset compatibility: Shimano Ultegra R8100 (12-speed)\u003c\/li\u003e\n  \u003cli\u003eChainring options: 50\/34 (compact), 52\/36 (mid-compact)\u003c\/li\u003e\n  \u003cli\u003eCrank arm lengths: 160mm, 165mm, 170mm, 172.5mm, 175mm\u003c\/li\u003e\n  \u003cli\u003eConstruction: Hollowglide forged chainrings\u003c\/li\u003e\n  \u003cli\u003eColor: Black\u003c\/li\u003e\n  \u003cli\u003eDesigned for 2x road drivetrain setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesign Benefits\u003c\/h3\u003e\n\u003col class=\"design_benefits\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHollowglide chainring technology\u003c\/strong\u003e — The profiled chainring teeth are engineered to work with the 12-speed chain geometry, producing front shifts that feel more controlled and less disruptive to your pedal stroke, whether you're sprinting or settling into a tempo effort.\u003c\/li\u003e\n  \u003cli\u003eBroad fit compatibility — With five crank arm lengths spanning 160mm to 175mm and two chainring configurations, the R8100 crankset accommodates a wide range of rider builds and gearing preferences without requiring aftermarket modifications.\u003c\/li\u003e\n  \u003cli\u003eWeight and stiffness balance — Hollow forging keeps arm weight low and torsional rigidity high, so more of what you put into the pedals moves the bike forward — particularly relevant during sustained climbs or accelerations where losses in the drivetrain add up.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"50x34 \/ Black \/ 160mm","offer_id":43520581599276,"sku":"IFCR8100MX04","price":365.0,"currency_code":"USD","in_stock":true},{"title":"52x36 \/ Black \/ 160mm","offer_id":43520581632044,"sku":"IFCR8100MX26","price":365.0,"currency_code":"USD","in_stock":true},{"title":"50x34 \/ Black \/ 165mm","offer_id":43520581664812,"sku":"IFCR8100AX04","price":365.0,"currency_code":"USD","in_stock":true},{"title":"52x36 \/ Black \/ 165mm","offer_id":43520581697580,"sku":"IFCR8100AX26","price":365.0,"currency_code":"USD","in_stock":true},{"title":"50x34 \/ Black \/ 170mm","offer_id":43520581730348,"sku":"IFCR8100CX04","price":365.0,"currency_code":"USD","in_stock":true},{"title":"52x36 \/ Black \/ 170mm","offer_id":43520581763116,"sku":"IFCR8100CX26","price":365.0,"currency_code":"USD","in_stock":true},{"title":"50x34 \/ Black \/ 172.5mm","offer_id":43520581795884,"sku":"IFCR8100DX04","price":365.0,"currency_code":"USD","in_stock":true},{"title":"52x36 \/ Black \/ 172.5mm","offer_id":43520581828652,"sku":"IFCR8100DX26","price":365.0,"currency_code":"USD","in_stock":true},{"title":"50x34 \/ Black \/ 175mm","offer_id":43520581861420,"sku":"IFCR8100EX04","price":189.99,"currency_code":"USD","in_stock":false},{"title":"52x36 \/ Black \/ 175mm","offer_id":43520581894188,"sku":"IFCR8100EX26","price":189.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-ultegra-8100-crankset-2984052.jpg?v=1771297273"},{"product_id":"shimano-ultegra-8100-power-crankset","title":"Shimano Ultegra 8100 Power Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano Ultegra 8100 Power Crankset\u003c\/strong\u003e brings dual-sided power measurement to the Ultegra tier — giving you the same split-power data and accuracy that serious training demands, built around the hollow-tech construction and 12-speed chainring compatibility of the R8100 groupset. At ±1.5% accuracy, it reads consistently whether you're grinding climbs or pushing through intervals, and the dual-sided design means you can actually see left-right power imbalances rather than just estimating them.\u003c\/p\u003e\n\u003cp\u003eConnectivity covers both ANT+ and Bluetooth simultaneously, so it pairs cleanly with cycling computers, smartwatches, and training apps without fussing with modes. Battery life is rated to over 300 hours, and zero-offset calibration is straightforward to run before a ride. The crankset is available in 170mm, 172.5mm, and 175mm arm lengths with compact 50\/34 and mid-compact 52\/36 chainring options — enough range to match most road and endurance setups.\u003c\/p\u003e\n\u003ch3\u003eShimano Ultegra 8100 Power Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower accuracy:\u003c\/strong\u003e ±1.5%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement:\u003c\/strong\u003e Dual-sided (left and right independently)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e ANT+ and Bluetooth\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery life:\u003c\/strong\u003e 300+ hours\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Shimano 12-speed road groupsets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"170mm \/ 52x36","offer_id":43520581992492,"sku":"IFCR8100PCX26A","price":899.99,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 50x34","offer_id":43520582025260,"sku":"IFCR8100PDX04A","price":899.99,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 50x34","offer_id":43520582090796,"sku":"IFCR8100PEX04A","price":819.99,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 52x36","offer_id":43520582123564,"sku":"IFCR8100PEX26A","price":819.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-ultegra-8100-power-crankset-1343167.jpg?v=1771297273"},{"product_id":"shimano-xt-fc-m8120-1-crank-arm-set","title":"Shimano XT FC-M8120-1 Crank Arm Set","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano XT FC-M8120-1 Crank Arm Set\u003c\/strong\u003e sits in the XT lineup where serious trail performance meets everyday rideability — cold-forged aluminum arms built around Hollowtech II construction for a stiffness-to-weight ratio that holds up under hard efforts on technical terrain. The narrow 178mm Q-factor keeps your pedaling stance compact, which translates directly into cleaner power transfer and less fatigue on longer rides.\u003c\/p\u003e\n\n\u003cp\u003eChainrings are sold separately, and the direct mount interface gives you the flexibility to run either a 1x or 2x setup without changing the crank. These arms are built for Boost spacing, which positions the chainline correctly for modern 148mm rear hubs — a detail that matters if you're running or upgrading to a Boost-spaced drivetrain. Three arm lengths are available — 165mm, 170mm, and 175mm — to match your fit requirements.\u003c\/p\u003e\n\n\u003ch3\u003eShimano XT FC-M8120-1 Crank Arm Set Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Cold-forged aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArm Lengths:\u003c\/strong\u003e 165mm, 170mm, 175mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ-Factor:\u003c\/strong\u003e 178mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainring Interface:\u003c\/strong\u003e Direct mount (chainrings not included)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHub Spacing Compatibility:\u003c\/strong\u003e Boost (148mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Black \/ 165mm","offer_id":43520606142508,"sku":"IFCM81201AXXT","price":69.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 170mm","offer_id":43520606175276,"sku":"IFCM81201CXXT","price":69.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 175mm","offer_id":43520606208044,"sku":"IFCM81201EXXT","price":69.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-xt-fc-m8120-1-crank-arm-set-8311758.jpg?v=1771297270"},{"product_id":"shimano-xtr-fc-m9100-2-crankset","title":"Shimano XTR FC-M9100-2 Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano XTR FC-M9100-2 Crankset\u003c\/strong\u003e sits at the top of Shimano's mountain bike hierarchy — and the construction reflects that. Forged alloy arms with Hollowtech II construction keep weight down to 597g without compromising the stiffness you need when you're putting real power through the pedals on a climb or sprint.\u003c\/p\u003e\n\n\u003cp\u003eThe double chainring setup — 28-38T — covers a wide gear range suited to technical trail riding, with a direct mount interface and 52mm chainline designed to work in alignment with the rest of the XTR M9100 drivetrain. A 162mm Q-factor keeps your stance narrow and efficient. Three crank arm lengths are available — 165mm, 170mm, and 175mm — so you can match the setup to your fit rather than the other way around.\u003c\/p\u003e\n\n\u003ch3\u003eShimano XTR FC-M9100-2 Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 597g\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainrings:\u003c\/strong\u003e 28-38T\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainring Mount:\u003c\/strong\u003e Direct Mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainline:\u003c\/strong\u003e 52mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQ-Factor:\u003c\/strong\u003e 162mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBB Shell Compatibility:\u003c\/strong\u003e 68mm \/ 73mm threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrank Arm Lengths:\u003c\/strong\u003e 165mm, 170mm, 175mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"28-38T \/ Black \/ 165mm","offer_id":43520648380460,"sku":"IFCM91002AX88","price":279.99,"currency_code":"USD","in_stock":false},{"title":"28-38T \/ Black \/ 170mm","offer_id":43520648413228,"sku":"IFCM91002CX88","price":279.99,"currency_code":"USD","in_stock":false},{"title":"28-38T \/ Black \/ 175mm","offer_id":43520648445996,"sku":"IFCM91002EX88","price":279.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-xtr-fc-m9100-2-crankset-3135400.jpg?v=1771297267"},{"product_id":"shimano-xtr-fc-m9120-1-crank-arm-set","title":"Shimano XTR FC-M9120-1 Crank Arm Set","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano XTR FC-M9120-1 Crank Arm Set\u003c\/strong\u003e sits at the top of Shimano's mountain bike hierarchy — forged alloy arms built around Hollowtech construction to keep weight low without compromising the stiffness you need when you're driving hard through technical terrain. Designed for 1x drivetrains, the M9120-1 is the crank arm set for riders who want XTR-level performance without the compromise of a 2x setup.\u003c\/p\u003e\n\n\u003cp\u003eNote that this listing covers the crank arms only — \u003cstrong\u003ea bottom bracket and chainring are sold separately\u003c\/strong\u003e. Available in 165mm, 170mm, and 175mm to match your fit requirements and riding style.\u003c\/p\u003e\n\n\u003ch3\u003eShimano XTR FC-M9120-1 Crank Arm Set Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003eMaterial: Forged alloy with Hollowtech construction\u003c\/li\u003e\n  \u003cli\u003eDrivetrain compatibility: 1x (single chainring)\u003c\/li\u003e\n  \u003cli\u003eArm lengths: 165mm, 170mm, 175mm\u003c\/li\u003e\n  \u003cli\u003eFinish: Black\u003c\/li\u003e\n  \u003cli\u003eIncludes: Crank arms only — bottom bracket and chainring not included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Black \/ 165mm","offer_id":43520648478764,"sku":"IFCM91201AXX","price":229.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 170mm","offer_id":43520648511532,"sku":"IFCM91201CXX","price":229.99,"currency_code":"USD","in_stock":false},{"title":"Black \/ 175mm","offer_id":43520648544300,"sku":"IFCM91201EXX","price":229.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/shimano-xtr-fc-m9120-1-crank-arm-set-1144069.jpg?v=1771297210"},{"product_id":"sram-force-1-dub-crankset","title":"SRAM Force 1 DUB Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM Force 1 DUB Crankset\u003c\/strong\u003e is a dedicated 1x drivetrain component built for road and gravel riders who want a clean, single-chainring setup without stepping up to the Red tier. Sitting in the middle of SRAM's road hierarchy, it delivers meaningful weight savings and a refined ride feel at a level most riders will find hard to outgrow. The Force 1 is designed for those who've committed to running a single ring — not as a workaround, but as a deliberate choice.\u003c\/p\u003e\n\n\u003cp\u003eThe crank arms are carbon fiber, which keeps the rotating mass low without sacrificing the stiffness you need when putting down power on a climb or out of a corner. DUB — SRAM's Durable Uniform Bushing — is the bottom bracket interface here, a 28.99mm spindle diameter designed to balance bearing longevity with installation flexibility across a wide range of shell standards. The chainrings are X-Sync 2, SRAM's profiled tooth design intended to improve chain retention and reduce drivetrain noise — a meaningful consideration when you're running a single ring with no front derailleur to guide the chain back. Available arm lengths from 165mm to 175mm and chainring sizes of 36t, 40t, and 46t give you real options to dial in your fit and gearing for the type of riding you do, whether that's long gravel loops or fast road rides.\u003c\/p\u003e\n\n\u003ch3\u003eSRAM Force 1 DUB Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003eDrivetrain compatibility: 1x (single chainring)\u003c\/li\u003e\n  \u003cli\u003eBottom bracket interface: DUB (28.99mm spindle)\u003c\/li\u003e\n  \u003cli\u003eCrank arm material: Carbon fiber\u003c\/li\u003e\n  \u003cli\u003eChainring tooth options: 36t, 40t, 46t\u003c\/li\u003e\n  \u003cli\u003eArm length options: 165mm, 170mm, 172.5mm, 175mm\u003c\/li\u003e\n  \u003cli\u003eChainring standard: X-Sync 2\u003c\/li\u003e\n  \u003cli\u003eIntended use: Road and gravel 1x drivetrains\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDesign Benefits\u003c\/h3\u003e\n\u003col class=\"design_benefits\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCarbon arms with DUB spindle technology\u003c\/strong\u003e — The carbon construction keeps weight in check while the DUB interface is engineered to support a wide range of bottom bracket shell standards, giving you flexibility when building up a bike or upgrading an existing drivetrain.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eX-Sync 2 chainring retention\u003c\/strong\u003e — The profiled teeth on the X-Sync 2 ring are designed to grip the chain through rough terrain and hard accelerations, reducing the chance of drops without the added complexity of a front derailleur or chain guide in most road setups.\u003c\/li\u003e\n  \u003cli\u003eMultiple ring and arm length combinations — With three chainring sizes and four arm lengths across the range, you can match the crankset to your body geometry and gearing needs rather than settling for a one-size compromise.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"40t \/ Carbon \/ 165mm","offer_id":43520987070508,"sku":"00.6118.620.006","price":129.99,"currency_code":"USD","in_stock":false},{"title":"40t \/ Carbon \/ 170mm","offer_id":43520987103276,"sku":"00.6118.620.008","price":129.99,"currency_code":"USD","in_stock":false},{"title":"36t \/ Carbon \/ 172.5mm","offer_id":43520987136044,"sku":"00.6118.543.016","price":129.99,"currency_code":"USD","in_stock":false},{"title":"40t \/ Carbon \/ 172.5mm","offer_id":43520987168812,"sku":"00.6118.620.009","price":129.99,"currency_code":"USD","in_stock":false},{"title":"46t \/ Carbon \/ 172.5mm","offer_id":43520987201580,"sku":"00.6118.620.003","price":129.99,"currency_code":"USD","in_stock":false},{"title":"40t \/ Carbon \/ 175mm","offer_id":43520987234348,"sku":"00.6118.620.010","price":129.99,"currency_code":"USD","in_stock":true},{"title":"46t \/ Carbon \/ 175mm","offer_id":43520987267116,"sku":"00.6118.620.004","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-force-1-dub-crankset-3196297.jpg?v=1771296909"},{"product_id":"sram-force-1-bb30-crankset","title":"SRAM Force 1 BB30 Crankset","description":"\u003cp\u003eSRAM’s  Force 1 Crankset is the way to start building your 1x drivetrain.\u003c\/p\u003e\n\u003cp\u003eThe Force  Crank here is the same crank you’ll find on 2x systems. It features  carbon-fiber arms and an aluminum spider where the fifth arm is actually the  right crank, with one of the chainring bolts threading into to the crank. You  get lightweight with carbon, and superb stiffness with chainring and spider working  together. \u003c\/p\u003e\n\u003cp\u003eThe  stiffness is enhanced, and the chain is secured thanks to the X-SYNC Chainring.  You may think that single-ring setups just take one ring from a double-ring  crank and that you’ll need a chain guide to keep the chain on the ring. With X-SYNC,  there’s no need for any secondary retention system. The key is a unique tooth  profile. The teeth themselves are taller than you’ll find on shiftable chainrings.  The tops of these teeth are also squared, rather than triangular. And then SRAM  goes farther. The base of the teeth has been engineered to possess mud-clearing  recesses. They created a unique wide-narrow alternating tooth pattern which  lines up with the inner and outer cage plates on the chain.\u003c\/p\u003e\n\u003cp\u003eThe tooth  pattern synchronizes with the chain. They recommend their standard eleven- and  ten-speed chains. The chainring teeth and recesses have been designed with this  chain in mind.\u003c\/p\u003e\n\u003cp\u003eSRAM  offers two different bolt circle diameters, 110mm and 130mm. The 110 works with  X-SYNC chainrings of 38, 40, 42, 44, 46, 48, and 50 teeth. The 130 works with  52 and 54 teeth. The single chainring is offset toward the bottom bracket,  which is another difference between a ring designed for front derailleurs. Keep  in mind, that with this crankset you are not forced to keep it 1x. You can pull  the X-SYNC ring and install a double-ring setup so long as the chainrings match  the bolt circle diameter you’ve already chosen.\u003c\/p\u003e\n\u003cp\u003eCrankarms  can be as short as 162.5mm and as long as 177.5mm.\u003c\/p\u003e\n\u003cp\u003eThe bottom bracket is not included, so you can choose what works best  for your needs. The cranks come with a thru-axle, which can be either a GXP,  the traditional 24\/22mm SRAM bottom bracket spindle, or a BB30. The GXP version  mates to English- or Italian-threaded GXP bottom brackets or with adapters to  most bottom bracket standards (BB30, PF30, BBright, BB86, BB386EVO, BB47). The  BB30 spindle works with BB30 and PF30 standards and can, in some cases, be  mated to an external bottom bracket as well. \u003c\/p\u003e\n\u003cp\u003eThe SRAM Force 1 Crankset weighs 679g when configured with 172.5mm  arms, a GXP bottom bracket, and 50-tooth chainrings. It’s the heart of a great  1x system.\u003c\/p\u003e","brand":"SRAM","offers":[{"title":"52t \/ Black \/ 170mm","offer_id":43520989331500,"sku":"00.6118.367.001","price":129.99,"currency_code":"USD","in_stock":false},{"title":"52t \/ Black \/ 172.5mm","offer_id":43520989364268,"sku":"00.6118.367.002","price":129.99,"currency_code":"USD","in_stock":false},{"title":"52t \/ Black \/ 175mm","offer_id":43520989397036,"sku":"00.6118.367.003","price":129.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-force-1-bb30-crankset-9946040.jpg?v=1771296909"},{"product_id":"sram-force-dub-crankset","title":"SRAM Force DUB Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM Force DUB Crankset\u003c\/strong\u003e sits at the heart of SRAM's 12-speed Force drivetrain — carbon crank arms, aluminum chainrings, and a DUB spindle interface that balances stiffness and durability across road, endurance, and gravel builds. If you want the precision SRAM's groupset system is known for without stepping up to the top tier, this is the crankset that delivers it.\u003c\/p\u003e\n\n\u003cp\u003eThe 2x chainring configuration uses a 13-tooth gap between ring sizes — rather than the more common 14-tooth spread — which tightens gear progression and reduces how often you need to trim or compensate mid-ride. The carbon arms keep the assembly light without sacrificing the pedaling stiffness that matters in hard efforts. 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Built around SRAM's DUB (Durable Unified Bottom Bracket) spindle standard, it's designed to work with the full NX Eagle ecosystem for consistent shifting across all 12 speeds. BOOST chainline compatibility makes it a natural fit for modern short-travel trail bikes and hardtails running BOOST-spaced frames.\u003c\/p\u003e\n\n\u003cp\u003eThe single 32-tooth chainring is paired with SRAM's X-SYNC tooth profile, \u003cstrong\u003edesigned to maintain chain retention\u003c\/strong\u003e through rough terrain and variable cadence without needing a separate chain guide in most trail applications. 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The carbon arms carry a direct-mount aero chainring with power measurement integrated directly into the crank, keeping the system tight and the drivetrain uncluttered. It's a natural fit for time trial racing, triathlon, and cyclocross, where a narrow gearing range and reduced mechanical complexity are genuine advantages.\u003c\/p\u003e\n\u003cp\u003ePower measurement comes from the Quarq DZero platform, which reads each leg independently for left\/right balance data accurate to \u003cstrong\u003e±1.5%\u003c\/strong\u003e across temperature changes and variable conditions. Chainrings can be swapped without recalibrating the meter — a practical detail that matters when you're switching between setups or tooth counts. The DUB spindle interface is compatible with a wide range of bottom bracket standards, and the system is designed for use with SRAM's Flattop 12-speed chain. Bottom bracket is not included.\u003c\/p\u003e\n\u003ch3\u003eSRAM Red 1 Aero DUB Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank arm material:\u003c\/strong\u003e Carbon\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower accuracy:\u003c\/strong\u003e ±1.5%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e DUB bottom bracket (not included), SRAM Flattop 12-speed chain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"177.5mm \/ 48t","offer_id":43521058471980,"sku":"00.3018.210.177","price":699.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-red-1-aero-dub-powermeter-crankset-2831629.jpg?v=1771296673"},{"product_id":"sram-red-axs-dub-powermeter-crankset","title":"SRAM Red AXS DUB Powermeter Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM Red AXS DUB Powermeter Crankset\u003c\/strong\u003e puts Quarq's DZero power measurement platform directly into SRAM's flagship road crankset — no separate spider, no added bulk, just accurate left\/right power data integrated into a carbon crankset built for racing. 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Carbon construction keeps weight low, while the integrated Quarq DZero power meter platform delivers bilateral power measurement — left and right leg independently — accurate to within +\/-1.5%.\u003c\/p\u003e\n\u003cp\u003eThe direct mount chainring design is more aerodynamic than previous SRAM Red generations and, crucially, swappable without requiring a full power meter recalibration. DUB spindle compatibility opens the crankset to a wide range of bottom bracket standards, and the system is designed to hold calibration accuracy regardless of weather conditions — useful for riders who don't stop when the road gets wet. 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Built for 12-speed electronic drivetrains, it pairs a stiff carbon crank arm with a direct-mount aluminum chainring in either 40t or 46t to suit different course profiles and rider preferences.\u003c\/p\u003e\n\n\u003cp\u003eThe DUB spindle interface is designed to work across SRAM's range of bottom brackets, giving you options depending on your frame's shell standard. And if your training demands more data, the crankset is \u003cstrong\u003epower meter compatible\u003c\/strong\u003e — the architecture is already there, so upgrading later doesn't require starting over.\u003c\/p\u003e\n\n\u003ch3\u003eSRAM Red 1 DUB Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpeeds:\u003c\/strong\u003e 12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrank Arm Material:\u003c\/strong\u003e Carbon\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainring Sizes:\u003c\/strong\u003e 40t, 46t\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrank Arm Lengths:\u003c\/strong\u003e 170mm, 172.5mm, 175mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBB Spindle Interface:\u003c\/strong\u003e DUB (29.2mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainline:\u003c\/strong\u003e 45mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChainring BCD:\u003c\/strong\u003e 107, Direct Mount\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"40t \/ Carbon \/ 170mm","offer_id":43521059160108,"sku":"00.6118.619.008","price":444.75,"currency_code":"USD","in_stock":false},{"title":"46t \/ Carbon \/ 170mm","offer_id":43521059192876,"sku":"00.6118.619.002","price":444.75,"currency_code":"USD","in_stock":false},{"title":"40t \/ Carbon \/ 172.5mm","offer_id":43521059225644,"sku":"00.6118.619.009","price":444.75,"currency_code":"USD","in_stock":false},{"title":"46t \/ Carbon \/ 172.5mm","offer_id":43521059258412,"sku":"00.6118.619.003","price":444.75,"currency_code":"USD","in_stock":true},{"title":"40t \/ Carbon \/ 175mm","offer_id":43521059291180,"sku":"00.6118.619.010","price":444.75,"currency_code":"USD","in_stock":true},{"title":"46t \/ Carbon \/ 175mm","offer_id":43521059323948,"sku":"00.6118.619.004","price":444.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-red-1-dub-crankset-5505351.jpg?v=1771296673"},{"product_id":"sram-red-dub-crankset","title":"SRAM Red DUB Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM Red DUB Crankset\u003c\/strong\u003e is built around carbon arms and direct-mount aluminum chainrings — a pairing that keeps weight low while delivering the stiffness you want when you're putting out serious power. It's designed for SRAM's 12-speed road drivetrain, and the smaller chainring combinations work in concert with a wider cassette range to smooth out gear progression across the entire spread.\u003c\/p\u003e\n\n\u003cp\u003eThe 45mm chainline and DUB spindle interface are engineered to work with the full range of SRAM DUB bottom brackets. Three crank arm lengths — 170mm, 172.5mm, and 175mm — and three chainring configurations give you enough options to dial in fit and gearing for your riding style, whether that's long climbs or flat criterium circuits. The crankset is also \u003cstrong\u003epower meter compatible\u003c\/strong\u003e, making it a practical foundation if you're building or upgrading a data-driven training setup.\u003c\/p\u003e\n\n\u003ch3\u003eSRAM Red DUB Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003eCrank Arm Material: Carbon\u003c\/li\u003e\n  \u003cli\u003eChainring Material: Aluminum, Direct Mount\u003c\/li\u003e\n  \u003cli\u003eSpeeds: 12\u003c\/li\u003e\n  \u003cli\u003eChainline: 45mm\u003c\/li\u003e\n  \u003cli\u003eBB Interface: DUB, 29.2mm spindle — compatible with all SRAM Red DUB bottom brackets\u003c\/li\u003e\n  \u003cli\u003eCrank Arm Lengths: 170mm, 172.5mm, 175mm\u003c\/li\u003e\n  \u003cli\u003eChainring Options: 46\/33, 48\/35, 50\/37\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"46x33 \/ Carbon \/ 170mm","offer_id":43521080819756,"sku":"00.6118.539.006","price":439.99,"currency_code":"USD","in_stock":false},{"title":"48x35 \/ Carbon \/ 170mm","offer_id":43521080852524,"sku":"00.6118.539.003","price":439.99,"currency_code":"USD","in_stock":false},{"title":"46x33 \/ Carbon \/ 172.5mm","offer_id":43521080885292,"sku":"00.6118.539.007","price":439.99,"currency_code":"USD","in_stock":true},{"title":"48x35 \/ Carbon \/ 172.5mm","offer_id":43521080918060,"sku":"00.6118.539.004","price":439.99,"currency_code":"USD","in_stock":true},{"title":"50x37 \/ Carbon \/ 172.5mm","offer_id":43521080950828,"sku":"00.6118.539.001","price":439.99,"currency_code":"USD","in_stock":false},{"title":"48x35 \/ Carbon \/ 175mm","offer_id":43521080983596,"sku":"00.6118.539.005","price":439.99,"currency_code":"USD","in_stock":true},{"title":"50x37 \/ Carbon \/ 175mm","offer_id":43521081016364,"sku":"00.6118.539.002","price":439.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-red-dub-crankset-7937685.jpg?v=1771296669"},{"product_id":"sram-s975-srm-power-meter-gxp-crankset","title":"SRAM S975 SRM Power Meter GXP Crankset","description":"\u003cp\u003eThe \u003cstrong\u003eSRAM S975 SRM Power Meter GXP Crankset\u003c\/strong\u003e puts SRM's measurement hardware inside a road crankset built to GXP interface standards — giving you accurate, wireless power data without the bulk of an aftermarket add-on. Eight strain gauges work together to deliver power readings to ±2% accuracy, which puts this unit in the range serious training and racing demands.\u003c\/p\u003e\n\u003cp\u003eData transfers wirelessly via ANT+ only, so any ANT+-compatible head unit will read power and cadence directly. Battery life is rated at 1,400 hours — long enough that mid-season battery anxiety isn't a real concern. The crankset ships with chainrings and cranks included; a bottom bracket is sold separately. 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The SRM spider sits between the chainrings and the arms, built around the 145\/112mm bolt circle diameter of modern Campagnolo chainrings, so the integration is seamless and the ride feel stays true to what Campagnolo riders expect.\u003c\/p\u003e\n\u003cp\u003eThe spider measures power via strain gauges to \u003cstrong\u003e±1% accuracy\u003c\/strong\u003e, transmits via ANT+ — broadcasting cadence alongside power — and runs for approximately 100 hours on a single charge through its built-in rechargeable battery. Temperature compensation is handled automatically, an important feature for crank-based meters where offset can drift as conditions change. The unit is fully sealed, so rain, mud, and post-ride cleaning with a pressure washer won't affect it. 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Designed in collaboration with Shimano, it replaces your left crank arm with a unit that reads power to within ±1.5% accuracy, adding minimal weight to your setup while delivering reliable watt data on every ride.\u003c\/p\u003e\n\n\u003cp\u003eThe Gen 3 unit connects via Bluetooth and ANT+ simultaneously, so it pairs with your head unit and training apps without fuss. Setup and firmware updates are handled through the Stages app — no proprietary hardware required. At 177.5mm, this variant suits riders who have already dialed in their fit around that crank length.\u003c\/p\u003e\n\n\u003ch3\u003eStages Gen 3 Power Meter Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Shimano Dura-Ace 9100 | 11-speed road\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCrank Length:\u003c\/strong\u003e 177.5mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eArm Material:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Diameter:\u003c\/strong\u003e 24mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±1.5%\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Stages","offers":[{"title":"177.5mm","offer_id":43521186857004,"sku":"DR9L-F","price":199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/stages-gen-3-power-meter-shimano-dura-ace-9100-left-side-crank-arm-1155557.jpg?v=1771296550"},{"product_id":"srm-dura-ace-9000-power-meter-crankset","title":"SRM Dura-Ace 9000 Power Meter Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRM Dura-Ace 9000 Power Meter Crankset\u003c\/strong\u003e pairs Shimano's flagship mechanical groupset crankset with SRM's long-established power measurement technology. Built for riders who demand reliable training and racing data, this crankset delivers accurate power output using eight strain gauges housed within the spider — giving you a measurement system with a stated accuracy of ±2%. It occupies a clear position at the top of SRM's road offering, combining proven hardware with data you can trust across every session.\u003c\/p\u003e\n\u003cp\u003eSRM has been manufacturing power meters longer than nearly anyone in the industry, and that experience shows in how this unit is built. The eight-strain-gauge configuration is designed to capture power data with consistency, measuring across the full pedal stroke rather than relying on a single point of reference. The crankset transmits wirelessly via ANT+, meaning it works with a wide range of compatible head units — Garmin Edge computers, most ANT+ cycling computers, and SRM's own PC6 and PC7 heads are all supported. \u003cstrong\u003eNo computer head is included\u003c\/strong\u003e, so you can pair it with the device already on your bars or choose separately. 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Shifting performance and chainring durability are governed by Shimano's own manufacturing standards, so the power meter integration does not come at the expense of everyday mechanical reliability.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e","brand":"SRM","offers":[{"title":"170mm \/ 53x39","offer_id":43521189675052,"sku":"10044960","price":1500.0,"currency_code":"USD","in_stock":true},{"title":"177.5mm \/ 53x39","offer_id":43521189740588,"sku":"10044963","price":1299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/srm-dura-ace-9000-power-meter-crankset-9160680.jpg?v=1771296550"},{"product_id":"srm-fsa-k-force-light-compact-wireless-powermeter","title":"SRM FSA K-Force Light Compact Wireless PowerMeter","description":"\u003cp\u003eThe \u003cstrong\u003eSRM FSA K-Force Light Compact Wireless PowerMeter\u003c\/strong\u003e pairs SRM's eight-strain-gauge measurement system with FSA K-Force Light cranks — a combination that delivers ±2% accuracy in a package built for riders who train and race with data they can trust. Power and cadence transmit wirelessly via ANT+, making it compatible with the wide range of ANT+ head units already used by serious riders.\u003c\/p\u003e\n\u003cp\u003eThe compact chainring configuration — 50\/34 with a 130mm large BCD and 110mm small BCD — suits riders who want versatility across varied terrain without sacrificing the crankset's stiffness-to-weight character. The included FSA MegaEXO ceramic bottom bracket comes in at 92g, and the full powermeter assembly weighs 806g excluding the bottom bracket. Battery life is rated at 1,400 hours, so it will outlast a full season of heavy training without a concern. 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Power and cadence data transmit wirelessly via ANT+ — no magnet, no wire, no interference with your drivetrain setup.\u003c\/p\u003e\n\u003cp\u003eThe unit ships with 53\/39 chainrings on a 130 BCD, an FSA MegaEXO ceramic bottom bracket, and a total crankset weight of 806g excluding the bottom bracket. Battery life is rated at 1,400 hours, so this is not something you'll be charging between rides. 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SRM's strain gauge technology is sealed inside a spider that's been glued shut at the factory — waterproof by design, not by luck — and rated to ±1% accuracy across the full power range. This isn't a crankset you second-guess mid-effort.\u003c\/p\u003e\n\u003cp\u003eInstallation follows the same process as any Campagnolo crankset. A neodymium magnet mounts to the frame to activate the electronics when the cranks begin to spin — two options are included to suit different frame configurations. The chainrings are standard Campagnolo, torqued to spec at the factory, and as long as you stay with the same ring sizes, \u003cstrong\u003ecalibration holds without re-checking\u003c\/strong\u003e. Swap ring sizes and you'll run a quick recalibration, but the process is straightforward. Battery life is rated at approximately 1,900 hours — around three and a half years at ten hours per week of riding.\u003c\/p\u003e\n\u003ch3\u003eSRM Campagnolo Powermeter Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003eAccuracy: ±1%\u003c\/li\u003e\n\u003cli\u003eBattery life: approximately 1,900 hours\u003c\/li\u003e\n\u003cli\u003eSealed, waterproof spider — factory glued\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRM","offers":[{"title":"175mm \/ 50x34","offer_id":43521191346220,"sku":"PM-SRM-CAM-4-BOLT-04-172","price":1299.99,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 52x36","offer_id":43521191378988,"sku":"PM-SRM-CAM-4-BOLT-26-175","price":1299.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/srm-campagnolo-powermeter-crankset-3165938.jpg?v=1771296547"},{"product_id":"sram-rival-dub-crankset","title":"SRAM Rival Dub Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM Rival Dub Crankset\u003c\/strong\u003e brings SRAM's DUB spindle interface to the Rival tier — giving you a wide-compatibility, aluminium-armed 2x crankset that installs cleanly into virtually any modern road or gravel frame. The alloy construction keeps things honest and durable, and the finish holds up without demanding extra care.\u003c\/p\u003e\n\n\u003cp\u003eChainring spacing follows a 13-tooth gap between the two rings, which is the same differential used across SRAM's higher-tier 2x groupsets. That consistency means shifts between rings are predictable and positive — no hesitation when you drop down onto a climb or wind back up. 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The \"Wide\" designation means a wider chainline, designed to clear tires up to 700x45c or 27.5x2.1\", making it a practical choice for gravel bikes and wider-clearance road frames. Aluminum arms keep the construction straightforward and durable, while the DUB spindle interface offers broad compatibility across framesets.\u003c\/p\u003e\n\n\u003cp\u003eThe X-Sync chainring is designed for consistent chain retention across varied terrain — the kind of chain control that matters when you're on rough surfaces and can't afford a dropped chain. 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Built around SRAM's DUB spindle interface, it integrates cleanly with the Rival AXS ecosystem and a wide range of compatible bottom brackets.\u003c\/p\u003e\n\u003cp\u003ePower accuracy comes from the left-side spindle-based Quarq strain gauge system, a platform with a long track record in both training and racing applications. The crankset runs on a single AAA lithium battery rated for 400+ hours — well over a full season of riding — and adds less than 40 grams over a standard Rival crankset. Available in 46x33 or 48x35 chainring configurations across five crank arm lengths, it suits a range of riders from road cyclists to gravel riders who want structured training data on every ride.\u003c\/p\u003e\n\u003ch3\u003eSRAM Rival Dub Power Meter Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle interface:\u003c\/strong\u003e DUB\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e AAA lithium, 400+ hour life\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight penalty over standard crankset:\u003c\/strong\u003e Under 40g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"175mm \/ 46x33","offer_id":43577852624940,"sku":"00.3018.294.007","price":239.99,"currency_code":"USD","in_stock":false},{"title":"175mm \/ 48x35","offer_id":43577852657708,"sku":"00.3018.294.003","price":239.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-rival-dub-power-meter-crankset-2948395.jpg?v=1771295654"},{"product_id":"sram-force-axs-dub-powermeter-spider-crankset","title":"SRAM Force AXS DUB Powermeter Spider Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM Force AXS DUB Powermeter Spider Crankset\u003c\/strong\u003e pairs SRAM's Force AXS D2 crankset with an integrated Quarq power meter built into the spider, giving you dual-sided power data without bolting on a separate unit. The power meter uses Quarq's D-Zero measurement technology, rated to within 1.5 percent accuracy and built to hold that accuracy through temperature swings rather than drifting as conditions change over a ride.\u003c\/p\u003e\n\u003cp\u003eUnlike single-sided power meters that estimate total output by doubling one leg's reading, this spider measures power from both legs independently, so the number on your head unit reflects your actual left\/right balance rather than an assumption. The measurement electronics live inside the DUB spindle, adding only about 40 grams to the crankset — a small tradeoff for full dual-sided data. It runs on a single CR2032 coin cell rated for roughly 200 hours of riding, swappable without tools, and connects over both ANT+ and Bluetooth so it pairs with essentially any modern cycling computer, watch, or app.\u003c\/p\u003e\n\u003cp\u003eThe crank itself uses SRAM's DUB bottom bracket standard and a direct-mount chainring interface, a combination built to balance stiffness, durability, and weight in one package. Chainrings use SRAM's X-SYNC tooth profile with a consistent 13-tooth gap between the two rings, which keeps shifting fast and reliable in the 2x setup this crankset is built around — a meaningful detail since inconsistent tooth spacing is a common source of hesitant front shifts on other cranksets.\u003c\/p\u003e\n\u003cp\u003eAt $549.99, this is a crankset for riders who want power data as a built-in part of their drivetrain rather than a separate accessory, and who are already running or planning to run SRAM AXS. It's suited to road and gravel riders training with structured power targets, since the combination of accurate dual-sided data and SRAM's electronic shifting integration gives you a complete, matched system rather than a power meter added on after the fact.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"Iridescent \/ 175mm \/ 46x33","offer_id":43583187124268,"sku":"00.3018.333.010","price":549.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-force-axs-dub-powermeter-spider-crankset-3794461.jpg?v=1771295177"},{"product_id":"sram-red-dzero-bb30-crank","title":"SRAM Red DZero BB30 Crank","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM Red DZero BB30 Crank\u003c\/strong\u003e pairs Quarq's DZero power meter spider with SRAM Red's carbon Exogram crankarms — giving you accurate power data without compromising the weight or shifting performance of a top-tier drivetrain. The hidden fifth-arm spider design integrates directly with Red chainrings, so the drivetrain behaves exactly as it would without a power meter in the system.\u003c\/p\u003e\n\u003cp\u003eThe DZero spider transmits both ANT+ and Bluetooth Low Energy signals simultaneously, meaning your head unit and phone can pull data at the same time — useful for logging rides without carrying a dedicated computer. A multicolor LED provides at-a-glance feedback on battery status and zero calibration, replacing the single indicator of earlier generations. 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That spider is the core of the system, and it does the heavy lifting: measuring your output consistently, broadcasting simultaneously over ANT+ and Bluetooth Low Energy, and doing all of it without requiring a magnet on the frame to wake it up.\u003c\/p\u003e\n\u003cp\u003eAccuracy sits at ±1.5%, and the system includes temperature compensation across a 10,000-degree range to keep readings consistent as conditions change through a ride. OmniCal means you won't need to recalibrate when swapping chainrings — a genuine convenience for riders who run multiple setups. The user-replaceable CR2032 coin cell battery is easy to source, and an IPX7 waterproof rating means the unit handles rain without complaint. A color-coded LED gives you real-time feedback on battery status and zero calibration. 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It's a crank-based power meter built around the DZero spider — Quarq's most refined measurement platform — without compromising on the data accuracy that makes power training worthwhile.\u003c\/p\u003e\n\u003cp\u003eThat spider does the real work here. It measures power to \u003cstrong\u003e±1.5% accuracy\u003c\/strong\u003e, broadcasts simultaneously over ANT+ and Bluetooth Low Energy, and compensates for temperature shifts across the ride so your numbers stay consistent whether you're warming up in the cold or finishing a long summer effort. There's no frame magnet required — the meter wakes automatically. The CR2032 coin cell battery is user-replaceable, and OmniCal means you won't need to recalibrate if you swap chainrings. 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