Sram Power Meter Spider AXS E1 For Threaded Mount Chainrings Red Including 8 Bolts And Thread Back Up Pin For Chainring

Sram: When you need the absolute best from your training data, the accuracy and reliability of the RED XPLR AXS Power Meter is the way to go. The spider design uses a proprietary thread-on chainring mount system which allows us to reduce weight and increase stiffness without compromising the ability to swap rings. A dual sided power measurement system, its accurate to +/-1.5% even as weather conditions change, and boasts unbeatable battery life. FEATURESThread Mount design is light, stiff and accurate, and available in 38T-46T+/- 1.5% accuracyUser replaceable CR2032 battery with 200-hour battery lifeBluetooth low energy technology and ANT+ wireless data transferMagicZero automatically checks and recalibrates your power meter as you rideNo cadence magnet required10K Temperature CompensationWaterproof (IPX7 waterproof to 1 meter for 30 minutes)AXS enabled for easy monitoring and firmware updates SPECIFICATIONS Bolt Circle Diameter (BCD) Thread MountBB Spindle Interface DUBPower Meter Type Ant USB