{"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","url":"https:\/\/ricycles.com\/products\/sram-red-2x-power-meter-kit-e1-direct-mount","provider":"RA Cycles","version":"1.0","type":"link"}