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It s the ultimate in integrated power measurement. The Force AXS power meter kit adds Quarq technology to our one-piece chainrings for the lightest, stiffest, and most accurate power package available. A 13-tooth delta on all chainring pairs ensures precise shifting for any setup, as well as a less dramatic change in cadence during front shifts. Combined with SRAM s most durable chainrings ever, it s an unbeatable combination.Technologies: AXS, X-Range, DZeroX-Range gearing technology gives you more range and a smoother gear progression, so you re always in the right gearPower 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 rideMeasures right and left leg power balanceCrisp and accurate front shiftsUnique chainring shape results in a lighter weight, stiffer, more durable unit50/37T, 48/35T and 46/33T chainring combos availableSpeed: 12Chainring Size: 46/33T, 48/35T, 50/37TBolt Circle Diameter (BCD): Direct Mount (DM)Chainring material: AluminiumPower Meter Type: SpiderPLEASE NOTE: Crank arms not included - you will receive the chainrings with the Power Meter integrated