SRAM Force D2 2x Power Meter Crankset Speed: 12 Spindle: 28.99mm BCD: Direct Mount 50/37 DUB 172.5mm Black Road DiscSRAMs lightest, stiffest, and most accurate integrated power meter and chainring combo is now on Force. Quarq D Zero technology is accurate to + 1. 5% and isnt affected by temperature changes, and the consistent 13 tooth gap on the rings ensures fast and reliable shifting. Integrated rings are also incredibly long lasting. X Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear Power meter is