SRAM FORCE AXS D2 POWERMETER SPIDER 170x50/37 DM DUB NoBB BLACKSram`s lightest, stiffest, and most accurate integrated power meter and chainring combo is now on Force X Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear Quarq D Zero technology is accurate to + 1. 5% and isnt affected by temperature changes Unique chainring shape results in a lighter weight, stiffer, more durable crankset Consistent 13 tooth gap on the rings ensures fast and reliable