Quarq: 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 REMEMBERX-Range™ gearing technology gives you more range and a smoother gear progression, so you’re always in the right gearIntegrated power measurementPower meter is fully integrated into the chainring set for lighter weightPower readings are accurate within +/-1.5% and aren’t affected by climate conditions during a ridePower balance measures left and right legs separatelyImproved front shifting performance for crisp and accurate front shiftsUnique chainring shape results in a lighter weight, stiffer, more durable cranksetIntegrated chainring design significantly reduces weightDUB™ bottom bracket adds durability, simplicity and broad compatibility SPECIFICATIONSSpeeds: 12Crank arm length: 170mm, 172.5mm, 175mm, 177.5mmBB Compatibility: All SRAM Road DUB BBsChainring Size: 46/33, 48/35, 50/37Bolt Circle Diameter (BCD): Direct Mount (DM)Chainline: 45.0mmBB Spindle Interface: DUBChainring material: AluminumGuard: No GuardCrank arm material: CarbonColor (Crank arm): Natural carbonPower Meter Type: ANT+ and BLE