SRAM FORCE AXS E1 POWERMETER SPIDER 172x46/33 TM DUB NoBB BLACK (P)Built upon the stability and accuracy of the RED AXS integrated power meter, now providing riders even more options for customization and serviceability at the Force level Power readings are accurate within + 1. 5% and arent affected by climate conditions during a ride X Range gearing technology gives you more range and a smoother gear progression, so youre always in the right gear 46 33T, 48 35T or 50 37T chainring combos available with various crank