{"title":"Bike Power Meters","description":"\u003cdiv class=\"collection-header\"\u003e\u003cp\u003eTraining with power is the most objective way to measure effort — and the \u003cstrong\u003eBike Power Meters\u003c\/strong\u003e collection at RA Cycles covers 124 meters across every mounting system available. Crank-arm meters from 4iiii attach to your existing Shimano cranks and add measurement without replacing the crankset. SRM's PM9 systems are standalone precision cranksets with a long reputation in professional training data. Campagnolo and SRAM offer power integration built directly into their top-tier cranksets. On the pedal side, Favero's Assioma Pro and Garmin's Rally series convert your pedals into the measurement point — dual-sided or single-sided depending on how much data precision you want. Each approach involves genuine trade-offs around install complexity, accuracy, and compatibility with your existing drivetrain. The collection covers all of them.\u003c\/p\u003e\u003c\/div\u003e","products":[{"product_id":"campagnolo-super-record-wrl-crankset-w-power-meter","title":"Campagnolo Super Record WRL Crankset w\/Power Meter","description":"\u003cp\u003eThe \u003cstrong\u003eCampagnolo Super Record WRL Crankset w\/Power Meter\u003c\/strong\u003e sits at the top of Campagnolo's drivetrain hierarchy — a hollow carbon construction paired with a Stages-sourced left-arm power meter, giving you accurate, ride-ready wattage data without adding a separate third-party unit. The Ultra-Torque system runs a titanium axle through ceramic USB bearings, translating pedal input into drivetrain motion with minimal friction and consistent feel across long efforts.\u003c\/p\u003e\n\u003cp\u003eThe WRL designation means wireless integration — speed and cadence data feeds directly into Campagnolo's 12-speed wireless ecosystem. Chainring options span 45x29 through 50x34, covering everything from punchy criterium gearing to extended climbs, and three crank arm lengths — 170mm, 172.5mm, and 175mm — let you dial in the fit before the data collection even starts.\u003c\/p\u003e\n\u003ch3\u003eCampagnolo Super Record WRL Crankset Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Hollow carbon fiber arms\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAxle:\u003c\/strong\u003e Titanium Ultra-Torque\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBearings:\u003c\/strong\u003e Ceramic USB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower meter:\u003c\/strong\u003e Stages left-arm integration\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Campagnolo","offers":[{"title":"170mm \/ 45x29","offer_id":43508959019052,"sku":"FCP0-SR2095","price":2449.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 48x32","offer_id":43508959051820,"sku":"FCP0-SR2028","price":2449.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 50x34","offer_id":43508959084588,"sku":"FCP0-SR2040","price":2449.0,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 45x29","offer_id":43508959117356,"sku":"FCP0-SR2295","price":2449.0,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 48x32","offer_id":43508959150124,"sku":"FCP0-SR2228","price":2449.0,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 50x34","offer_id":43508959182892,"sku":"FCP0-SR2240","price":2449.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 45x29","offer_id":43508959215660,"sku":"FCP0-SR2595","price":2449.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 48x32","offer_id":43508959248428,"sku":"FCP0-SR2528","price":2449.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 50x34","offer_id":43508959281196,"sku":"FCP0-SR2540","price":2449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/campagnolo-super-record-wrl-crankset-wpower-meter-3183640.jpg?v=1771301892"},{"product_id":"favero-assioma-uno-upgrade-kit","title":"Favero Assioma UNO Upgrade Kit","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eFavero Assioma UNO Upgrade Kit\u003c\/strong\u003e turns an existing Assioma UNO single-sided power meter into a full dual-sided Assioma DUO setup by adding a matched right pedal with its own power sensor. The kit includes the right pedal, a two-meter micro-USB charging cable, and a magnetic charging connector, and pairing it to your existing left pedal takes a few seconds through the free Favero Assioma app rather than requiring any recalibration of the pedal you already own. Once paired, the two pedals work as one system, measuring power independently from each leg instead of estimating a full reading from one side and doubling it, which is the real difference between single-sided and dual-sided power data.\u003c\/p\u003e\n\u003cp\u003eThe added pedal runs the same IAV — Instantaneous Angular Velocity — technology as the rest of the Assioma line, rated to ±1% accuracy with temperature compensation across a -10°C to 60°C range, so readings hold up from a cold morning start to a hot afternoon climb. It reports IAV Power Phase and IAV Rider Position data alongside standard power and cadence, giving a genuinely detailed look at pedaling technique rather than just a wattage number. Each pedal runs on a rechargeable lithium battery rated for at least 50 hours per charge, and broadcasts over both Bluetooth and ANT+ simultaneously, so it pairs with a head unit and a phone app without switching modes. The pedal body carries an IP67 water resistance rating and weighs about 151.5 grams.\u003c\/p\u003e\n\u003cp\u003eBecause the upgrade kit uses the same pedal body and cleat interface as the rest of the Assioma line — compatible with LOOK Kéo-style cleats — installing it doesn't change how the bike fits or feels underfoot, and the Q-factor stays the same as the original UNO. For a rider who already owns an Assioma UNO and wants left\/right power balance without replacing pedals they've already dialed in, the Upgrade Kit is the more direct route than buying a full DUO system outright and setting aside the UNO you already have.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Favero Electronics","offers":[{"title":"Default Title","offer_id":43511649042476,"sku":"772-05","price":569.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/favero-assioma-uno-upgrade-kit-4371737.jpg?v=1771300887"},{"product_id":"garmin-vector-replacement-battery-doors","title":"Garmin Vector Replacement Battery Doors","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eGarmin Vector Replacement Battery Doors\u003c\/strong\u003e are the straightforward fix when your Vector pedal power meter doors become worn, cracked, or lost. Maintaining a proper seal on the battery compartment is critical — a compromised door can lead to moisture ingress and unreliable power readings, so having a spare set on hand makes sense for any Vector user who trains or races regularly.\u003c\/p\u003e\n\u003cp\u003eSourced directly from Garmin, these are genuine replacement parts designed to fit Vector power meter pedals and maintain the integrity of the original design. Simple to swap out, they keep your investment protected and your data accurate.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Garmin","offers":[{"title":"Default Title","offer_id":43705655590956,"sku":"S00-00506-03","price":15.0,"currency_code":"USD","in_stock":true}]},{"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":"power2max-ng-eco-sram-110bcd-spider","title":"Power2Max NG Eco SRAM 110bcd Spider","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003ePower2Max NG Eco SRAM 110bcd Spider\u003c\/strong\u003e is a spider-based power meter that swaps in for the stock spider on compatible SRAM cranksets, turning a crank you already own into a power-measuring one. It's built for SRAM's 3-bolt cranks — Force 1, Rival 1, Force 22, Rival 22, and S900 — in the 110bcd fitment, and at roughly 160 grams it adds negligible weight to the drivetrain. Because it measures torque at the spider rather than independently at each crank arm, it reports total power along with left-right balance and pedal smoothness, giving you the training metrics that matter without the cost of a true dual-sided system.\u003c\/p\u003e\n\n\u003cp\u003eAccuracy is rated at +\/-2%, with a paid upgrade path to +\/-1% for riders who want tighter precision for structured training or racing. Data goes out over both ANT+ and Bluetooth, so it pairs with a head unit, a smart trainer, or a phone app without extra hardware, and the unit includes temperature compensation to keep readings consistent as conditions change through a ride. Power comes from a user-replaceable CR2450 coin-cell battery rated around 300 hours, which means no charging cables to track down before a big ride — just a battery swap every few months of regular riding.\u003c\/p\u003e\n\n\u003cp\u003eThe NG Eco name reflects where this sits in Power2max's lineup: it's the accessible entry point into their spider-based power meters, built around the same core measurement approach as their premium NG line but with a coin-cell battery instead of rechargeable and a wider stock accuracy tolerance. It's backed by a 2-year warranty, upgradable to 5 years, and rated water-resistant for riding in the rain. For a rider with a compatible SRAM crank who wants reliable, ANT+\/Bluetooth power data without paying for a rechargeable battery or the tightest possible accuracy spec, the NG Eco is a straightforward way to start training with power.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"R\u0026A Cycles","offers":[{"title":"Default Title","offer_id":43704728059948,"sku":"185787","price":680.0,"currency_code":"USD","in_stock":true}]},{"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-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":"shimano-dura-ace-9200-power-crank-arms","title":"Shimano Dura-Ace 9200 Power Crank Arms","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eShimano Dura-Ace 9200 Power Crank Arms\u003c\/strong\u003e let you add dual-sided power measurement to a Dura-Ace 9200 drivetrain without replacing your chainring — just the arms themselves, built to the same tolerances as the rest of the 9200 groupset. Power accuracy is rated to ±1.5%, with left and right readings reported independently so you can track side-to-side balance as well as overall output.\u003c\/p\u003e\n\u003cp\u003eConnectivity covers both ANT+ and Bluetooth, so the arms pair with virtually any head unit, training platform, or smartwatch. Battery life is rated at over 300 hours, and the system is waterproof — two things that matter when you're training through unpredictable conditions. \u003cstrong\u003eZero-offset calibration\u003c\/strong\u003e is straightforward and can be done on the fly. 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Accuracy is rated to within ±1.5%, and the integrated design keeps the weight and stiffness profile consistent with the standard Dura-Ace 9200 crank. It connects via both ANT+ and Bluetooth, making it compatible with virtually every head unit and training platform on the market.\u003c\/p\u003e\n\u003cp\u003eBattery life is rated at over 300 hours with a waterproof housing, and zero-offset calibration is straightforward to perform from any compatible head unit. Three chainring options — 50\/34, 52\/36, and 54\/40 — cover compact, mid-compact, and standard configurations, and the crank is designed to work with Shimano's 12-speed road groupsets. 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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-ultegra-8100-power-crank-arms","title":"Shimano Ultegra 8100 Power Crank Arms","description":"\u003cp\u003eThe \u003cstrong\u003eShimano Ultegra 8100 Power Crank Arms\u003c\/strong\u003e bring dual-sided power measurement to the Ultegra 8100 groupset — delivered as crank arms only, so you can pair them with your existing chainring and build out your setup on your own terms. 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Quarq strain gauge technology is integrated into the arm itself, reading left-side pedaling power and doubling it to calculate total wattage output — a clean solution for riders who want training data without a full groupset change.\u003c\/p\u003e\n\u003cp\u003eBattery life is rated at 400-plus hours, which means the power meter runs quietly in the background across weeks of riding before you need to think about it. The IPX7 water resistance rating means it handles rain, puddles, and post-ride washdowns without issue. 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Rather than replacing your crank arms or pedals, it swaps directly into the 107mm BCD spider position on compatible DUB spindle cranks — keeping your current setup intact while adding the data infrastructure of a Quarq DZero DUB power meter.\u003c\/p\u003e\n\n  \u003cp\u003eAccuracy is ±1.5%, and unlike some power meters that drift in extreme heat or cold, this one uses a 10,000-point temperature compensation system to maintain consistent readings across a full range of conditions. IPX7 waterproofing handles rain without issue. Whether you're training in July heat or wet fall weather, the numbers stay reliable. That kind of environmental resilience matters for riders who don't stop when conditions get difficult.\u003c\/p\u003e\n\n  \u003cp\u003eThe AXS integration is a practical differentiator. The powermeter connects to the SRAM AXS app over Bluetooth Low Energy, allowing you to check battery status, update firmware, and manage settings directly from your phone. ANT+ keeps it compatible with virtually every head unit on the market. The CR2032 battery lasts approximately 200 hours of ride time and swaps without tools — no coin required, just a quick press-and-turn on the battery door.\u003c\/p\u003e\n\n  \u003cp\u003eChainring compatibility covers the full range of current Red and Force AXS configurations: Red AXS 1x (36T–46T), Force AXS 1x (36T–46T), and Force AXS 2x (33\/46 and 35\/48). 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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. 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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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Built around carbon crank arms and an integrated spindle, it delivers left-sided power measurement that calculates total wattage — giving you reliable output data on every ride without adding unnecessary bulk.\u003c\/p\u003e\n\u003cp\u003eA 400-hour battery life running on a single user-replaceable AAA lithium cell means power data is always on when you need it. The IPX7 waterproof rating keeps it running through mud, creek crossings, and extended wet-weather rides. Compatible with the AXS Flight Attendant system, the crankset integrates cleanly with the broader T-Type ecosystem — your power data, suspension, and drivetrain can all communicate through a single network.\u003c\/p\u003e\n\u003ch3\u003eSRAM X0 Eagle T-Type Power Specs at a Glance\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ-Factor:\u003c\/strong\u003e 174mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e AAA lithium, user-replaceable — up to 400 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater resistance:\u003c\/strong\u003e IPX7 rated\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"165mm \/ 32t","offer_id":43521114177580,"sku":"00.6118.641.002","price":440.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 32t","offer_id":43521114210348,"sku":"00.6118.641.001","price":440.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 32t","offer_id":43521114243116,"sku":"00.6118.641.000","price":440.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-x0-eagle-t-type-power-meter-spindle-cransket-q174-3465963.jpg?v=1771296615"},{"product_id":"sram-xx-sl-eagle-t-type-power-meter-spider-cransket-q168","title":"SRAM XX SL Eagle T-Type Power Meter Spider Cransket Q168","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM XX SL Eagle T-Type Power Meter Spider Crankset Q168\u003c\/strong\u003e sits at the top of SRAM's mountain drivetrain hierarchy — a dual-sided power meter built into a carbon-armed crankset engineered to weigh as little as possible without giving up structural integrity. The spider uses a proprietary chainring mount system that sheds grams from the traditional design, while the carbon crank arms keep the overall package firmly in the weight-weenie category without sacrificing the stiffness a hard sprint or technical climb demands.\u003c\/p\u003e\n\u003cp\u003eThe power measurement side of things is equally considered. Dual-sided sensing captures both left and right independently, giving you true total wattage rather than a doubled estimate. \u003cstrong\u003eMagicZero automatic calibration\u003c\/strong\u003e handles zero-offset checks while you ride, removing one more pre-ride routine from your list. AxCad cadence detection eliminates the need for a separate magnet, ANT+ and Bluetooth Low Energy transmission keeps it compatible with virtually any head unit, and a 200-hour battery life with a user-replaceable cell means you're rarely thinking about charging. The IPX7 waterproof rating and 10K temperature compensation keep the data accurate whether you're riding in a cold morning climb or a wet trail descent. Compatible with AXS Flight Attendant for riders running a connected suspension and drivetrain setup.\u003c\/p\u003e\n\u003ch3\u003eSRAM XX SL Eagle T-Type Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003eMeasurement: Dual-sided, true total power\u003c\/li\u003e\n\u003cli\u003eBattery life: 200 hours, user-replaceable\u003c\/li\u003e\n\u003cli\u003eTransmission: ANT+ and Bluetooth Low Energy\u003c\/li\u003e\n\u003cli\u003eWaterproof rating: IPX7\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"165mm \/ 34t","offer_id":43521140883500,"sku":"00.6118.637.002","price":1155.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 34t","offer_id":43521140916268,"sku":"00.6118.637.001","price":1155.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 34t","offer_id":43521140949036,"sku":"00.6118.637.000","price":1155.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-xx-sl-eagle-t-type-power-meter-spider-cransket-q168-1833965.jpg?v=1771296553"},{"product_id":"sram-xx-sl-eagle-t-type-power-meter-spider-cransket-q174","title":"SRAM XX SL Eagle T-Type Power Meter Spider Cransket Q174","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM XX SL Eagle T-Type Power Meter Spider Crankset Q174\u003c\/strong\u003e sits at the top of SRAM's mountain drivetrain hierarchy — a dual-sided power meter built into a carbon-arm crankset that's designed to feed your head unit accurate, real-time watt data without the extra weight or fragility of a bolt-on solution. The spider uses a proprietary chainring mount system that keeps mass low while maintaining the rigidity you want when you're driving through a technical climb.\u003c\/p\u003e\n\u003cp\u003eDual-sided measurement means total power is calculated from both legs independently, giving you a more complete picture of your output and any imbalance between left and right. The MagicZero feature is designed to automatically check and recalibrate zero offset while you ride, so manual calibration stops before a climb isn't part of the routine. \u003cstrong\u003eCadence is measured without a magnet\u003c\/strong\u003e via SRAM's AxCad system, and at 200 hours of battery life from a user-replaceable cell, this crankset doesn't ask much of you between rides. ANT+ and Bluetooth Low Energy connectivity keep it compatible with the full range of cycling computers and the AXS ecosystem — including Flight Attendant. An IPX7 waterproof rating and 10K temperature compensation mean the data stays reliable whether you're in a cold morning fog or a summer downpour.\u003c\/p\u003e\n\u003ch3\u003eSRAM XX SL Eagle T-Type Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003eMeasurement: Dual-sided with MagicZero auto-calibration\u003c\/li\u003e\n\u003cli\u003eConnectivity: ANT+ and Bluetooth Low Energy\u003c\/li\u003e\n\u003cli\u003eBattery: User-replaceable, rated to 200 hours\u003c\/li\u003e\n\u003cli\u003eWaterproof rating: IPX7 | Temperature compensation: 10K\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"165mm \/ 34t","offer_id":43521141047340,"sku":"00.6118.637.005","price":1155.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 34t","offer_id":43521141080108,"sku":"00.6118.637.004","price":1155.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 34t","offer_id":43521141112876,"sku":"00.6118.637.003","price":1155.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-xx-sl-eagle-t-type-power-meter-spider-cransket-q174-5963077.jpg?v=1771296554"},{"product_id":"sram-xx-eagle-t-type-power-meter-spider-cransket-q174","title":"SRAM XX Eagle T-Type Power Meter Spider Cransket Q174","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM XX Eagle T-Type Power Meter Spider Crankset Q174\u003c\/strong\u003e brings data-driven training to the top of the XX Eagle drivetrain without compromising the weight and stiffness that define the tier. Carbon crank arms keep the assembly light and rigid, while a redesigned spider uses a proprietary chainring mount to shed every gram that doesn't earn its place. The result is a crankset built for riders who want precise power feedback and a drivetrain that doesn't feel like it's carrying the sensor along for the ride.\u003c\/p\u003e\n\u003cp\u003ePower is measured via left-side sensing and doubled to calculate total watts — a clean, proven approach that keeps the system simple and the battery life exceptional. A single AAA lithium cell runs for up to 400 hours and is user-replaceable in the field, so there's no hunting for a service port mid-season. IPX7 waterproofing means the meter handles everything the trail throws at it. The crankset also integrates with AXS Flight Attendant, allowing your power output to communicate directly with other AXS components in a connected drivetrain setup.\u003c\/p\u003e\n\u003ch3\u003eSRAM XX Eagle T-Type Power Specs at a Glance\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement:\u003c\/strong\u003e Left-side sensing, doubled for total power\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e AAA lithium, user-replaceable — up to 400 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater resistance:\u003c\/strong\u003e IPX7 rated\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"165mm \/ 32t","offer_id":43521141276716,"sku":"00.6118.638.002","price":1045.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 32t","offer_id":43521141309484,"sku":"00.6118.638.001","price":1045.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 32t","offer_id":43521141342252,"sku":"00.6118.638.000","price":1045.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-xx-eagle-t-type-power-meter-spider-cransket-q174-4787859.jpg?v=1771296553"},{"product_id":"sram-xx-eagle-t-type-power-meter-spindle-cransket-q174","title":"SRAM XX Eagle T-Type Power Meter Spindle Cransket Q174","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM XX Eagle T-Type Power Meter Spindle Crankset Q174\u003c\/strong\u003e puts accurate power data directly into your training without adding complexity or bulk. Carbon crank arms keep weight in check while a left-side spindle-based measurement system delivers total power output to your head unit in real time. IPX7 waterproofing means it handles whatever conditions you ride through without hesitation.\u003c\/p\u003e\n\u003cp\u003eThe integrated AAA lithium battery is user-replaceable and rated to 400 hours — long enough that battery management stops being something you think about mid-season. Full AXS ecosystem compatibility means the power meter connects seamlessly with Flight Attendant and other AXS components, so your drivetrain can share data across the system. 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Engineered for the XX Eagle Transmission series, this spindle-based power meter delivers accurate, consistent data while maintaining the durability and clean integration expected from SRAM’s flagship components.\u003c\/p\u003e\n  \u003cp\u003eBuilt around a \u003cstrong\u003espindle-integrated power meter design\u003c\/strong\u003e, it measures left-side output and doubles the value for total power, ensuring precise readings without adding external bulk or complexity. The sleek, fully integrated unit keeps weight to a minimum and retains the system’s natural stiffness and responsiveness.\u003c\/p\u003e\n  \u003cp\u003eConstructed with \u003cstrong\u003ecarbon fiber technology\u003c\/strong\u003e and designed for use with SRAM’s DUB bottom bracket standard, this power meter arm ensures efficient power transfer and exceptional strength for aggressive trail and XC riding. It’s fully compatible with the XX Eagle T-Type drivetrain, making it the ideal choice for riders who demand data-driven performance on every climb and sprint.\u003c\/p\u003e\n  \u003ch3\u003eSRAM XX Eagle T-Type Power Meter Spindle Left Arm Highlights\u003c\/h3\u003e\n  \u003cul\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegration:\u003c\/strong\u003e Spindle-based power meter built directly into the left crank arm for seamless setup.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e Measures left-side power and doubles the value for total wattage with ±1.5% accuracy.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Designed for SRAM XX Eagle T-Type Transmission and DUB bottom brackets.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Lightweight, stiff carbon arm ensures efficient power transfer.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e ANT+ and Bluetooth enable easy pairing with head units and apps.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003ch3\u003ePerformance Benefits\u003c\/h3\u003e\n  \u003col\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIntegrated Power:\u003c\/strong\u003e Clean, lightweight design delivers reliable data without external sensors.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTrail-Ready Durability:\u003c\/strong\u003e Engineered to withstand tough XC and enduro conditions.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSeamless Compatibility:\u003c\/strong\u003e Perfect fit within the SRAM XX Eagle T-Type Transmission ecosystem.\u003c\/li\u003e\n  \u003c\/ol\u003e\n  \u003ch3\u003eFinal Take\u003c\/h3\u003e\n  \u003cp\u003eThe SRAM XX Eagle T-Type Power Meter Spindle Left Arm combines cutting-edge power measurement with SRAM’s most advanced mountain drivetrain. 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Spider-based and purpose-built for the T-Type ecosystem, it delivers dual-sided power data with ±1.5% accuracy from a package light enough to forget it's there. This is SRAM's most accurate power meter, designed without compromise for riders who need reliable data on every ride.\u003c\/p\u003e\n\n  \u003cp\u003eThe thread-on chainring mount is the defining design choice. Rather than conventional bolt-on attachment, SRAM's proprietary threaded interface between the spider and the T-Type chainring — available in 32–38t — reduces weight and eliminates the reliability concerns that small bolts under sustained load can introduce. Compatible with all Eagle Transmission 8-Bolt cranks via SRAM's DUB spindle standard, the spider fits cleanly into the existing drivetrain without adapters or compatibility headaches.\u003c\/p\u003e\n\n  \u003cp\u003eMagicZero handles automatic calibration while you ride, removing the pre-ride zero ritual entirely — the spider checks and recalibrates itself on the go, so data quality isn't dependent on the rider remembering to zero before a hard effort. AxCad measures cadence internally, with no external magnet to mount or lose. Battery life is 200 hours per user-replaceable CR2032 cell, keeping maintenance genuinely infrequent. The spider broadcasts simultaneously over Bluetooth LE and ANT+, pairing with any head unit on the market. For AXS ecosystem riders, it integrates directly with Flight Attendant — SRAM's automatic suspension and shifting coordination system — and is managed through the SRAM AXS app for battery monitoring, firmware updates, and configuration. IPX7 waterproofing (1m for 30 minutes) handles wet rides without concern.\u003c\/p\u003e\n\n  \u003ch3\u003eSpecs at a Glance\u003c\/h3\u003e\n  \u003cul class=\"specs_at_a_glance\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Eagle Transmission 8-Bolt cranks\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSpindle Interface:\u003c\/strong\u003e DUB\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eChainring Mount:\u003c\/strong\u003e Proprietary thread-on (T-Type)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eChainring Range:\u003c\/strong\u003e 32–38t\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMeasurement:\u003c\/strong\u003e Dual-sided (total watts)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±1.5%\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e CR2032, user-replaceable, 200-hour life\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e Bluetooth LE + ANT+\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWaterproofing:\u003c\/strong\u003e IPX7 (1m \/ 30 min)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAXS Compatible:\u003c\/strong\u003e Yes — Flight Attendant, AXS app\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\u003eThread-on mount eliminates bolt hardware:\u003c\/strong\u003e Lighter and more reliable than conventional bolt-on chainring attachment under sustained power.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMagicZero automatic calibration:\u003c\/strong\u003e The spider recalibrates itself while you ride — no manual zero, no degraded data quality from skipped calibration.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAxCad internal cadence:\u003c\/strong\u003e No external magnet required. One less thing to mount, check, or lose.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUniversal wireless:\u003c\/strong\u003e ANT+ and Bluetooth LE simultaneously — pairs with Garmin, Wahoo, Hammerhead, and any other head unit.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFull AXS integration:\u003c\/strong\u003e Flight Attendant compatible and app-managed for battery status, firmware updates, and component configuration.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"Default Title","offer_id":43704833769516,"sku":"00.3018.345.000","price":530.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/SRAM-AXS-D1-T-TYPE-PM-SPIDER-FOR-THREADED-CHAINRING.jpg?v=1780494904"},{"product_id":"srm-campagnolo-rechargeable-powermeter-crankset","title":"SRM Campagnolo Rechargeable Powermeter Crankset","description":"\u003cp\u003eThe \u003cstrong\u003eSRM Campagnolo Rechargeable Powermeter Crankset\u003c\/strong\u003e pairs Campagnolo's carbon-fiber crank arms with SRM's rechargeable spider — putting one of the most trusted names in training data directly into a Campagnolo drivetrain. 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. Available in 172.5mm crank arm length with 52x36 or 53x39 chainring combinations.\u003c\/p\u003e\n\u003ch3\u003eSRM Campagnolo Rechargeable 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\u003eTransmission: ANT+ (power and cadence)\u003c\/li\u003e\n\u003cli\u003eBattery: Built-in rechargeable, ~100-hour runtime per charge\u003c\/li\u003e\n\u003cli\u003eChainring compatibility: 145\/112mm BCD (Campagnolo standard)\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SRM","offers":[{"title":"172.5mm \/ 52x36","offer_id":43521186332716,"sku":"PM-SRM-RECH-CAM-4-BOLT-36-172","price":1599.99,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 53x39","offer_id":43521186365484,"sku":"PM-SRM-RECH-CAM-4-BOLT-39-172","price":1599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/srm-campagnolo-rechargeable-powermeter-crankset-6582673.jpg?v=1771296550"},{"product_id":"stages-gen-3-power-meter-shimano-dura-ace-9100-left-side-crank-arm","title":"Stages Gen 3 Power Meter | Shimano Dura-Ace 9100 Left Side Crank Arm","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eStages Gen 3 Power Meter — Shimano Dura-Ace 9100 Left Side Crank Arm\u003c\/strong\u003e is built to drop into your existing Dura-Ace groupset without compromise. 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. 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This version uses dual-sided sensors for a Total Power reading and Left-Right Balance data. Total Power adds together the total power of the left and right pedal and is accurate to within 1 percent. Left-Right Balance gives insight into your power distribution so you can monitor weak spots in your pedal stroke and improve pedaling efficiency and cadence. This can be especially useful for riders coming back from injury who overcompensate, favoring one side. The Power Pedal System is already being chosen as the top pedal for many professional road racers and triathletes.\u003c\/p\u003e \n\u003cp\u003eThis breakthrough power system is centered around the success of the Speedplay Zero Pedal. These pedals are known for their low weight, excellent durability, and amazing power transfer. A slim profile allows riders to confidently take on corners at high speeds. They are also easy to customize with three-axis adjustability and up to 15 degrees of float. A lower stack height and a freer range of motion helps all riders find their most comfortable, aerodynamic, or powerful position. Riders can clip in from either side, making it as easy as possible to get moving. The pedals come with standard tension cleats but are also compatible with easy tension cleats. The Wahoo Speedplay Power Pedal System takes an elite road pedal and combines it with groundbreaking technology.\u003c\/p\u003e \n\u003cp\u003ePower readings will be consistently at your disposal regardless of how long your ride is. The battery lasts 75+ hours on a single charge and comes with a charging kit. Low battery can be indicated on your ELEMNT computer, Wahoo Fitness App, or the LED indicators on the pod. They also automatically calibrate as you ride and adjust with the changing temperature. The actual power mechanism is small enough that it only raises the weight of the pedals from 222 grams in the standard Speedplay Zero version to 276 grams with dual-sided power meters. This makes them more than capable of becoming a part of your lightweight road setup. When it comes time to ride indoors, they can be combined with the Wahoo Kickr Roller for accurate power in simulated riding. Regardless of your goals, the Wahoo Speedplay Power Pedal System will help you reach them.\u003c\/p\u003e","brand":"Wahoo","offers":[{"title":"Default Title","offer_id":43711419416620,"sku":"WFPRX2S55","price":849.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/wahoo-speedplay-power-pedals-dual-sided-7543977.jpg?v=1771296188"},{"product_id":"wahoo-speedplay-powrlink-zero-pedal-system-single-sided","title":"Wahoo Speedplay Power Pedals Single-Sided","description":"\u003cp\u003eThe Wahoo Speedplay Power Pedal System is an advanced system that adds the benefits of a power meter to an already high-performing road pedal. 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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. An IPX7 waterproof rating keeps it reliable in wet conditions, and firmware updates are handled wirelessly through the Qalvin app.\u003c\/p\u003e\n\u003ch3\u003eQuarq DZero BB30 Aluminum Crank Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003eBottom bracket standard: BB30\u003c\/li\u003e\n\u003cli\u003eBCD: 130mm\u003c\/li\u003e\n\u003cli\u003eCrank material: Forged aluminum\u003c\/li\u003e\n\u003cli\u003ePower accuracy: ±1.5%\u003c\/li\u003e\n\u003cli\u003eConnectivity: ANT+ and Bluetooth Low Energy (simultaneous broadcast)\u003c\/li\u003e\n\u003cli\u003eBattery: User-replaceable CR2032 coin cell\u003c\/li\u003e\n\u003cli\u003eWaterproof rating: IPX7\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Quarq","offers":[{"title":"170mm \/ 130bcd","offer_id":43595072831532,"sku":"00.3018.155.170","price":439.99,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 130bcd","offer_id":43595072864300,"sku":"00.3018.155.172","price":439.99,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 130bcd","offer_id":43595072897068,"sku":"00.3018.155.175","price":439.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/quarq-dzero-bb30-aluminum-crank-1437446.jpg?v=1771294455"},{"product_id":"rotor-power-crank","title":"Rotor Power Crank","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eRotor Power Crank\u003c\/strong\u003e puts dual-sided power measurement inside the crank arms themselves — not a spider, not a pedal axle — which is what makes its data so clean. Strain gauges sit at the heart of hollow left and right crank arms, measuring all three axes of deformation to filter out the false readings that come from lateral loading, road vibration, and shifting.\u003c\/p\u003e\n\u003cp\u003eOne consequence of that placement: the measurement point sits where no thermal tension builds as metal expands and contracts, making the Power Crank immune to temperature-induced power drift — a real-world problem on rides that cross multiple climate zones or transition between shade and sun. Data samples at 500Hz, and the unit is built on Rotor's 3D+ crank platform, keeping the weight penalty to \u003cstrong\u003e30g over a standard 3D+ MAS\u003c\/strong\u003e. Beyond raw wattage, left\/right balance data gives you something to train against — not just fitness, but pedaling technique and muscle symmetry.\u003c\/p\u003e\n\u003ch3\u003eRotor Power Crank Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003eSampling rate: 500Hz\u003c\/li\u003e\n\u003cli\u003eDual-sided measurement via strain gauges in left and right crank arms\u003c\/li\u003e\n\u003cli\u003eTemperature drift immune — designed for statically indeterminate measurement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Rotor","offers":[{"title":"170mm \/ 130bcd","offer_id":43595156357164,"sku":"C13-001-19010-001","price":399.99,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 130bcd","offer_id":43595156389932,"sku":"C13-001-21010-001","price":399.99,"currency_code":"USD","in_stock":true}]},{"product_id":"rotor-2inpower-crank","title":"Rotor 2INPower Crank","description":"\u003cp\u003eRotor brings a new direction to power meters with their  2INpower Crankset. This is an innovative crank-based two-sided measuring device  that makes up for the deficiencies found in other power meters. With an  accuracy that can’t be beat and a spider which can accommodate just about all  110mm bolt circle diameter chainrings, and the ability to work with non-round  rings, the 2INpower is unique and welcome to the market. \u003c\/p\u003e\n\u003cp\u003eIf you’re wondering where the strain gauges are hiding,  there are four inside the right crankarm and another four the axle. The axle  also contains the motherboard and rechargeable battery, and the end cap the  antenna. This internal placement of the gauges means that the unit isn’t  temperature-sensitive, and the need to calibrate of adjust the offset is almost  non-existent. You’ll do it on install of pedals, of chainrings, so you’ll do it  when you first install the cranks, then after 30 hours of riding, and pretty  much only when you re\/install pedals or chainrings. \u003c\/p\u003e\n\u003cp\u003eThe crank measures both left and right side power-with the  right arm measuring flexion and the axle measuring the torsion from the left  arm. The ANT+ and Bluetooth Smart signals are sent from the cranks is on as  long as the cranks are moving, which improves the accuracy of the power reading.  Rotor puts the margin of error at less than +\/- 1%.\u003c\/p\u003e\n\u003cp\u003eThere are additional benefits to the constant stream of data  being sent out from the crank as you pedal. It’s one thing if you’re using  round chainrings, as crankarm speed is fairly constant--though in low-cadence  situations, the constant stream is a help-it’s another when you’re using  non-round rings. Like Rotor’s Q and QXL rings. When you’re pedaling these  rings, your crank speed is not constant, it constantly ebbs and flows. So  accuracy with these rings is much greater. The data can be seen in some ANT+  equipped head units. But the real plus is when you utilize Rotor’s free  software. You can use their Torque 360 graph to figure out which Rotor ring is  best for your pedaling style, and exactly how to orient the rings, something  Rotor calls OCA or Optimum Chainring Angle. \u003c\/p\u003e\n\u003cp\u003eThe software can be used to analyze your pedal stroke  post-ride, but it also can be utilized during indoor riding sessions. You can  watch in real-time your stroke and how small changes can affect power. There’s  even an advanced training mode, where the samples sent from the crank double to  enable greater precision for analysis. \u003c\/p\u003e\n\u003cp\u003eThere are two other metrics that are unique to Rotor that  you can utilize to improve your pedal stroke and power output. This also can be  found in the software. One is TE or Torque Effectiveness, which is a ratio o  total torque divided by positive torque. The other is PS or Pedal Smoothness,  which is average power divided by maximum power. Many times, getting more power  is about pedaling better, not harder. And perfecting the stroke could be more  valuable than squeezing greater power out of your body.\u003c\/p\u003e\n\u003cp\u003eRotor, as per their design thinking, works with 7055  aluminum as their material of choice. The crankarms are based off their 3D+  design, with unique machining in the right arm to fit the strain gauges. The  right arm and axle are permanently affixed, while the left arm is loose and is  the one you tighten on to the spindle.\u003c\/p\u003e\n\u003cp\u003eThe bottom bracket spindle is 30mm in diameter and is what  Rotor refers to as UBB30. This means Universal Bottom Bracket. The size is  stiffer than narrower bottom brackets and allows for both the electronics and  the battery to be housed inside, where they are protected from the elements and  minimize any increase in rotating weight. Rotor’s oversized spindle can work  with threaded as well as press-fit bottom brackets. For English and Italian  threaded bottom brackets, you’ll need an UBB bottom bracket, probably from  Rotor. For the press fit standards, BB86, BB30, BB30A, BBright\/BB386EVO, you  should be able to purchase either the proper cups or bearings with the correct  inner diameter.\u003c\/p\u003e\n\u003cp\u003eRotor makes the 2INPower available in the following crank  lengths: 165, 170, 172.5, 175. The bolt circle diameter is 110mm. It’s  primarily designed for road applications, though can certainly work for gravel  and cyclocross, and the chainrings, be they single or double, which are  designed for those disciplines  Weight  for the 172.5 crankset is 645g without chainrings, bolts, or bottom bracket.\u003c\/p\u003e\n\u003cp\u003eThe rechargeable battery is inside the axle and remains  there for the life of it. It should last about 250 hours under normal  conditions. No need to top off when you first install the crank. Charging is  done via a 125cm long magnetic head cable that attaches to the crank on one end  and a USB plug on the other. There’s a light in the crank that indicates  battery life, going from green to yellow to red. When power is low, it will  send a signal out that most ANT+ head units can read warning of low battery  power. The battery is designed to survive 300 charging cycles, so it would be  about 75,000 hours of riding before you’d need to worry (75k hours means if you  rode two hours a day, every day for almost 103 years, you’d exhaust the  battery)\u003c\/p\u003e\n\u003cp\u003eThe cranks come in a box with a bolt to install the left  arm, the charger cable, installation manual, software manual, and a postcard  for using TrainingPeaks at a discount. The software works with Mac OSX 10.7 and  newer, Windows 7 and newer. A smartphone app is in the works as well.\u003c\/p\u003e\n\u003cp\u003eThe Rotor 2INpower crankset brings precision, low weight,  and smart thinking to crank-based power meters.\u003c\/p\u003e","brand":"Rotor","offers":[{"title":"175mm \/ 110bcd","offer_id":43595164516396,"sku":"C13-026-21010-001","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/37996.jpg?v=1770773289"},{"product_id":"sram-red-axs-e1-power-meter-spider-for-threaded-mount-chainrings","title":"SRAM Red AXS E1 Power Meter Spider for Threaded Mount Chainrings","description":"\u003cdiv\u003e\n  \u003cp\u003eThe \u003cstrong\u003eSRAM Red AXS E1 Power Meter Spider for Threaded Mount Chainrings\u003c\/strong\u003e is a spider-based power meter built specifically for SRAM Red AXS cranks running the Thread Mount chainring system. It measures total output from both crank arms through the spider at ±1.5% accuracy, held consistent across temperature variation via 10K temperature compensation. For riders already on Red AXS who want to add power data without changing crank arms, it's a direct upgrade.\u003c\/p\u003e\n\n  \u003cp\u003eThe Thread Mount system is central to how this spider is designed. SRAM's proprietary thread-on chainring attachment is lighter and stiffer than a bolt-on BCD interface — and it still allows chainring swaps across the 38T–46T range without pulling the crank. The spider installs on your Red AXS crank arms and replaces the standard spider, adding the power measurement hardware without meaningfully changing the weight or feel of the build.\u003c\/p\u003e\n\n  \u003cp\u003eMagicZero automatic calibration runs continuously in the background as you ride, rechecking and adjusting without any manual zero required at the start of each session. Cadence is measured internally — no magnet needed. A user-replaceable CR2032 battery powers the unit for 200 hours, a significant advantage over rechargeable systems that need to be charged between rides. Data transmits simultaneously via Bluetooth Low Energy and ANT+ to head units and training platforms. The AXS app handles firmware updates and provides monitoring alongside your cycling computer. Waterproofing is rated to IPX7 — submersion to 1 meter for up to 30 minutes.\u003c\/p\u003e\n\n  \u003ch3\u003eSpecs at a Glance\u003c\/h3\u003e\n  \u003cul class=\"specs_at_a_glance\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMeasurement type:\u003c\/strong\u003e Spider-based, dual-sided total power\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAccuracy:\u003c\/strong\u003e ±1.5% (10K temperature compensation)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eChainring compatibility:\u003c\/strong\u003e Thread Mount, 38T–46T\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCrank compatibility:\u003c\/strong\u003e SRAM Red AXS crankset arms\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e CR2032, user-replaceable, 200-hour life\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e Bluetooth Low Energy + ANT+\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e MagicZero (automatic, continuous)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCadence:\u003c\/strong\u003e Internal measurement, no magnet required\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWaterproofing:\u003c\/strong\u003e IPX7 (1 meter, 30 minutes)\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eApp:\u003c\/strong\u003e SRAM AXS — firmware updates, monitoring\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\u003eThread Mount keeps chainring swaps easy.\u003c\/strong\u003e The proprietary thread-on system is lighter and stiffer than bolt-on BCD, and you can still swap rings across the 38T–46T range without removing the crank — useful for riders who run different chainrings for different courses.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMagicZero eliminates the pre-ride zero ritual.\u003c\/strong\u003e Automatic background recalibration means one less thing to remember before rolling out. Accuracy is maintained without manual input.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003e200-hour replaceable battery.\u003c\/strong\u003e No charging schedule, no dead meter mid-block. CR2032s are widely available and inexpensive to keep on hand.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDual protocol transmission.\u003c\/strong\u003e Simultaneous Bluetooth and ANT+ means the spider talks to any head unit or training platform without reconfiguring or choosing between protocols.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"Default Title","offer_id":43780826300460,"sku":"00.3018.388.000","price":550.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-red-axs-e1-power-meter-spider-for-threaded-mount-chainrings-4635523.jpg?v=1771294269"},{"product_id":"sram-red-1x-xplr-e1-dub-wide-power-meter-crankset","title":"SRAM Red 1x XPLR E1 DUB Wide Power Meter Crankset","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM Red 1x XPLR E1 DUB Wide Power Meter Crankset\u003c\/strong\u003e is built for gravel riders who want Red-level precision without the complexity of a double chainring setup. Carbon crankarms — 29 grams lighter than the previous generation — pair with a spider-based dual-sided power meter that measures to within 1.5% accuracy across all conditions. Removable thread-mount chainrings in 40t or 42t give you options for the terrain you're actually riding.\u003c\/p\u003e\n\u003cp\u003eThe DUB spindle interface keeps the bottom bracket setup clean and reliable, and the user-replaceable CR2032 battery runs up to 200 hours before it needs swapping — no proprietary charging required. Waterproofing means the data keeps flowing whether you're riding through morning dew or a full-day mud fest. Five crank arm lengths, from 160mm to 172.5mm, mean there's a fit for most riders without compromise.\u003c\/p\u003e\n\u003ch3\u003eSRAM Red 1x XPLR E1 Specs at a Glance\u003c\/h3\u003e\n\u003cul class=\"specs_at_a_glance\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower measurement:\u003c\/strong\u003e Dual-sided, ±1.5% accuracy\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery:\u003c\/strong\u003e CR2032, user-replaceable, up to 200 hours\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle interface:\u003c\/strong\u003e DUB Wide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"160mm \/ 40t","offer_id":43780826857516,"sku":"00.6118.689.000","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"160mm \/ 42t","offer_id":43780826890284,"sku":"00.6118.689.006","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"165mm \/ 40t","offer_id":43780826923052,"sku":"00.6118.689.001","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"165mm \/ 42t","offer_id":43780826955820,"sku":"00.6118.689.007","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"167.5mm \/ 40t","offer_id":43780826988588,"sku":"00.6118.689.002","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"167.5mm \/ 42t","offer_id":43780827021356,"sku":"00.6118.689.008","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 40t","offer_id":43780827054124,"sku":"00.6118.689.003","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 42t","offer_id":43780827086892,"sku":"00.6118.689.009","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 40t","offer_id":43780827119660,"sku":"00.6118.689.004","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 42t","offer_id":43780827152428,"sku":"00.6118.689.010","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 40t","offer_id":43780827185196,"sku":"00.6118.689.005","price":1210.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 42t","offer_id":43780827217964,"sku":"00.6118.689.011","price":1210.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-red-1x-xplr-e1-dub-wide-power-meter-crankset-6897392.jpg?v=1771294267"},{"product_id":"campagnolo-super-record-s-wrl-crankset-w-power-meter","title":"Campagnolo Super Record S WRL Crankset w\/Power Meter","description":"\u003cp\u003eThe \u003cstrong\u003eCampagnolo Super Record S WRL Crankset with Power Meter\u003c\/strong\u003e puts accurate power data directly into your ride without adding complexity to your setup. Unidirectional carbon fiber arms keep weight low, while a steel Ultra-Torque axle ensures that power transfer stays stiff and efficient through every pedal stroke. The integrated power meter uses a gyroscope and 16 extensometers to measure output at +\/- 1% accuracy — the kind of precision that serious training and racing demands.\u003c\/p\u003e\n\u003cp\u003eThe flat spider design contributes to a cleaner aerodynamic profile, and the reworked chainrings with symmetrical teeth deliver fluid shifting across all chainring combinations, including under cross-chaining conditions. Battery management is handled through the MyCampy 3.0 app, and the power meter shares a charging cable with the rest of the Super Record S groupset — one less thing to think about before a ride.\u003c\/p\u003e\n\u003ch3\u003eCampagnolo Super Record S WRL 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 Unidirectional carbon fiber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower meter accuracy:\u003c\/strong\u003e +\/- 1%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement system:\u003c\/strong\u003e Gyroscope and 16 extensometers\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Campagnolo","offers":[{"title":"165mm \/ 45x29","offer_id":43795906461740,"sku":"FCP0-SRS2695","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"165mm \/ 48x32","offer_id":43795906494508,"sku":"FCP0-SRS2628","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"165mm \/ 50x34","offer_id":43795906527276,"sku":"FCP0-SRS2640","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"165mm \/ 52x36","offer_id":43795906560044,"sku":"FCP0-SRS2662","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 45x29","offer_id":43795906592812,"sku":"FCP0-SRS2095","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 48x32","offer_id":43795906625580,"sku":"FCP0-SRS2028","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 50x34","offer_id":43795906658348,"sku":"FCP0-SRS2040","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"170mm \/ 52x36","offer_id":43795906691116,"sku":"FCP0-SRS2062","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 45x29","offer_id":43795906723884,"sku":"FCP0-SRS2295","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 48x32","offer_id":43795906756652,"sku":"FCP0-SRS2228","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 50x34","offer_id":43795906789420,"sku":"FCP0-SRS2240","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"172.5mm \/ 52x36","offer_id":43795906822188,"sku":"FCP0-SRS2262","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 45x29","offer_id":43795906854956,"sku":"FCP0-SRS2595","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 48x32","offer_id":43795906887724,"sku":"FCP0-SRS2528","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 50x34","offer_id":43795906920492,"sku":"FCP0-SRS2540","price":1999.0,"currency_code":"USD","in_stock":true},{"title":"175mm \/ 52x36","offer_id":43795906953260,"sku":"FCP0-SRS2562","price":1999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/campagnolo-super-record-s-wrl-crankset-wpower-meter-2802182.jpg?v=1771294217"},{"product_id":"sram-red-2x-power-meter-kit-e1-direct-mount","title":"SRAM Red 2x Power Meter Kit E1 Direct Mount","description":"\u003cdiv\u003e\n\u003cp\u003eThe \u003cstrong\u003eSRAM Red 2x Power Meter Kit E1 Direct Mount\u003c\/strong\u003e builds the power meter directly into the chainring itself rather than bolting a separate spider between the crank arm and the rings. It's an 8-bolt direct mount kit designed for SRAM's Red AXS E1 cranksets, and the one-piece chainring design keeps the whole assembly stiffer than a bolted spider-and-ring setup while measuring power independently from each leg and reporting a true left\/right balance rather than a single combined number. SRAM rates the system at +\/-1.5% accuracy, with active temperature compensation built in so readings hold steady as the ride heats up through a long climb or cools off on a fast descent.\u003c\/p\u003e\n\u003cp\u003eCalibration runs in the background through SRAM's MagicZero system, continuously rechecking itself as you ride instead of requiring a manual zero before every session. Data broadcasts over both ANT+ and Bluetooth simultaneously, so it can pair with a head unit and a phone app at the same time without switching modes. Power comes from a user-replaceable CR2032 battery rated for roughly 200 hours, which means swapping a coin cell instead of tracking down a charging cable mid-season. The chainrings themselves use SRAM's X-Range gearing, holding a consistent 13-tooth delta between the big and small ring across every available size — 46\/33, 48\/35, 50\/37, 52\/39, 54\/41, and 56\/43 — which keeps cadence steadier through front shifts than a wider tooth gap would allow.\u003c\/p\u003e\n\u003cp\u003eBecause this is the power meter version of SRAM's standard direct mount chainring rather than a separate spider that bolts between crank arm and ring, installation is a straightforward swap onto an existing Red AXS E1 crankset instead of a full crank replacement. RA Cycles carries the kit across all six chainring sizes. For riders already running Red AXS who want accurate, temperature-stable power data without touching their crank arms or bottom bracket, the Direct Mount kit is the simpler path to power than replacing the whole crankset.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"SRAM","offers":[{"title":"46x33","offer_id":43947437424684,"sku":"00.3018.387.000","price":880.0,"currency_code":"USD","in_stock":true},{"title":"48x35","offer_id":43947437457452,"sku":"00.3018.387.001","price":880.0,"currency_code":"USD","in_stock":true},{"title":"50x37","offer_id":43947437490220,"sku":"00.3018.387.002","price":880.0,"currency_code":"USD","in_stock":true},{"title":"52x39","offer_id":43947437522988,"sku":"00.3018.387.003","price":880.0,"currency_code":"USD","in_stock":true},{"title":"54x41","offer_id":43947437555756,"sku":"00.3018.387.004","price":880.0,"currency_code":"USD","in_stock":true},{"title":"56x43","offer_id":43947437588524,"sku":"00.3018.387.005","price":880.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/sram-red-2x-power-meter-kit-e1-direct-mount-3121126.jpg?v=1771294034"},{"product_id":"look-keo-blade-power-pedal-single","title":"Look Keo Blade Power Pedal - Single","description":"\u003cp\u003eThe Look Keo Blade Power Pedals combine power meter technology with the classic performance and reliability of Look’s iconic Keo Blade. Featuring fully integrated electronics within the pedal axle, these pedals deliver exceptional power data accuracy while maintaining a lightweight 260 grams per pair. This version features left side power readings for accurate riding data. The Keo Blade Power Pedals ensure seamless setup with automatic calibration, ANT+\/Bluetooth connectivity, and quick installation without altering your bike fit or cleat position. This makes them an ideal upgrade for riders looking to use data to efficiently improve their performance.\u003c\/p\u003e\n\u003cp\u003eDespite additional electronics and tech, the Keo Blade Power Pedals are built to withstand challenging conditions with IPX7-rated protection against water, dust, and debris. The aerodynamic carbon body, paired with Look’s patented Blade technology, maximizes power transfer and efficiency, offering a stiff and stable platform for consistent pedaling. Advanced features like real-time balance monitoring allow riders to identify and address imbalances, optimize pedal stroke efficiency, and reduce fatigue. With an exceptional 60-hour battery life, both pedals charge simultaneously using a magnetic USB-C connection, ensuring they are ready for long training sessions and race days.\u003c\/p\u003e\n\u003cp\u003eIntegrated with the dedicated Look app, the Keo Blade Power Pedals offer enhanced functionality, including live data monitoring, calibration, and firmware updates. The app also centralizes product management, enabling riders to customize settings, track battery status, and access valuable performance metrics such as FTP, normalized power, and training stress scores. The Look Keo Blade Power Pedals are a great way to keep a natural ride feel while gathering data to improve on every ride.\u003c\/p\u003e","brand":"Look","offers":[{"title":"Default Title","offer_id":43958489415724,"sku":"28624","price":750.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/look-keo-blade-power-pedal-single-9828266.jpg?v=1771294031"},{"product_id":"look-keo-blade-power-pedal-dual","title":"Look Keo Blade Power Pedal - Dual","description":"\u003cp\u003eThe Look Keo Blade Dual Power Pedals combine power meter technology with the classic performance and reliability of Look’s iconic Keo Blade. Featuring fully integrated electronics within the pedal axle, these pedals deliver exceptional power data accuracy while maintaining a lightweight 260 grams per pair. With dual-sided power measurement, they provide comprehensive insights into wattage, left\/right balance, cadence, torque effectiveness, and pedaling smoothness. The Keo Blade Power Dual pedals ensure seamless setup with automatic calibration, ANT+ and Bluetooth connectivity, and quick installation without altering your bike fit or cleat position. This makes them an ideal upgrade for riders looking to use data to efficiently improve their performance.\u003c\/p\u003e\n\u003cp\u003eDespite additional electronics and tech, the Keo Blade Dual Power Pedals are built to withstand challenging conditions with IPX7-rated protection against water, dust, and debris. The aerodynamic carbon body, paired with Look’s patented Blade technology, maximizes power transfer and efficiency, offering a stiff and stable platform for consistent pedaling. Advanced features like real-time balance monitoring allow riders to identify and address imbalances, optimize pedal stroke efficiency, and reduce fatigue. With an exceptional 60-hour battery life, both pedals charge simultaneously using a magnetic USB-C connection, ensuring they are ready for long training sessions and race days.\u003c\/p\u003e\n\u003cp\u003eIntegrated with the dedicated LOOK app, the Keo Blade Dual Power Pedals offer enhanced functionality, including live data monitoring, calibration, and firmware updates. The app also centralizes product management, enabling riders to customize settings, track battery status, and access valuable performance metrics such as FTP, normalized power, and training stress scores. The Look Keo Blade Power Pedals are a great way to keep a natural ride feel while gathering data to improve on every ride.\u003c\/p\u003e","brand":"Look","offers":[{"title":"Default Title","offer_id":43958489448492,"sku":"28625","price":1100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/files\/look-keo-blade-power-pedal-dual-9840718.jpg?v=1771294031"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/7684\/9196\/collections\/power-meters-577168.jpg?v=1746215648","url":"https:\/\/ricycles.com\/collections\/bike-power-meters.oembed?page=5","provider":"RA Cycles","version":"1.0","type":"link"}