Sram: The SRAM RED AXS™ power meter breaks with tradition and breaks through to new levels of performance. We reengineered road gearing: reducing front chainring size and adding more range to the rear cassette. We also maintained a 13-tooth delta on all chainring pairs, ensuring precise shifting for any setup. This results in more useful gearing and better shifting across all configurations. Our power meters are also designed with Quarq’s premier DZero™ power measurement technology fully integrated into the crankset. Welcome to the pinnacle of the power meter. THINGS TO REMEMBER X-Range™ gearing technology gives you more range and a smoother gear progression, so you’re always in the right gear Integrated power measurement Power meter is fully integrated into the chainring set for lighter weight Power readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ride Power balance measures left and right legs separately Improved front shifting performance for crisp and accurate front shifts Unique chainring shape results in a lighter weight, stiffer, more durable crankset Integrated chainring design significantly reduces weight DUB™ bottom bracket adds durability, simplicity and broad compatibility SPECIFICATIONS Speeds: 12 Crank arm length: 170mm, 172.5mm, 175mm, 177.5mm BB Compatibility: All SRAM Road DUB BBs Chainring Size: 46/33, 48/35, 50/37 Bolt Circle Diameter (BCD): Direct Mount (DM) Chainline: 45.0mm BB Spindle Interface: DUB Chainring material: Aluminum Guard: No Guard Crank arm material: Carbon Color (Crank arm): Natural carbon Power Meter Type: ANT+ and BLE