The Force AXS power meter kit adds Quarq technology to Sram`s one-piece chainrings for the lightest, stiffest, and most accurate power package availableA 13-tooth delta on all chainring pairs ensures precise shifting for any setup, as well as a less dramatic change in cadence during front shiftsX-Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gearUnique chainring shape results in a lighter weight, stiffer, more durable unitMeasures right and left leg power balanceDirect Mount50/37TBlack12spStandardUPC/EAN/GTIN: 710845886591