{"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","url":"https:\/\/ricycles.com\/products\/sram-red-axs-e1-power-meter-spider-for-threaded-mount-chainrings","provider":"RA Cycles","version":"1.0","type":"link"}