SRAM's most advanced aluminum cranks meet their most accessible power measurement. Get the data you need to progress, integrated into a light, stiff and strong crankset that features our X-Range shifting.Spindle-based power meter unit measures left side power to calculate total wattsLong battery life (400+ hours) to power a season of rides (User replaceable AAA lithium battery)IPX7 waterproof to 1 meter for 30 minutesModern aluminum crankarms and aluminum 2x chainring optimizes stiffness to weight ratio, with material only where it s neededX-Range gearing technology gives you more range and a smoother gear progression, so you re always in the right gear2x aluminum intergrated chainring offers crisp and accurate front shiftsDUB bottom bracket adds durability and simplicity (Bottom bracket sold separately)45mm chainlineItem SpecificationsBB IncludedNoChainline/Hub Compatibility135/142 Road Disc Hubs < 415 mm ChainstayChainline/Hub Compatibility135/142 Road Disc Hubs > 415 mm ChainstayChainring BCDDirect Mount SRAM 8-BoltColorBlackCrank Intended UseRoadCrank Length (mm)160Defined ColorBlackDrivetrain Speeds12Number of ChainringsDoublePedal Spindle9/16"Rings46/33Spindle Interface TypeSRAM DUB SRAM Rival AXS Power Meter Crankset E1 Crankset UPC: 710845916267