The Sram Quarq Powermeter Kit 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.Sram Quarq Powermeter Kit FeaturesAXS™ enabled for easy monitoring and firmware upgradesX-Range™ gearing technology gives you more range and a smoother gear progression, so you’re always in the right gearIntegrated power measurementPower 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 weight8-bolt direct mount compatibility only to new RED® and Force eTap AXS™ cranks. Not reverse compatible with prior 8-bolt cranksSram Quarq Powermeter Kit SpecificationsSpeeds: 12Chainring Size:46/33, 48/35, 50/37Bolt Circle Diameter (BCD): Direct Mount (DM)Chainring material:AluminumPower Meter Type:Ant USB
