Riders want more range and closer steps between gears and that's the driving design principle of the SRAM Force crankset. It offers smaller chainrings with a consistent 13-tooth gap between size variants, delivering smooth, accurate and dependable shifting for the modern rider. Features: X-Range gearing technology gives you more range and a smoother gear progression, so you are always in the right gear. Crisp and accurate front shifts. DUB bottom bracket adds durability and simplicity. Can be upgraded to a power meter. Specification: Speeds: 12. BB Compatibility: All SRAM Road DUB BBs. Chainring Size: 46-33t, 48/35T. Crank arm length: 165mm, 167.5mm, 170mm, 172.5mm, 175mm. Chainline: 45.0mm. BB Spindle Interface: DUB. Chainring material: Aluminium. Guard: No Guard. Bolt Circle Diameter (BCD): 107 BCD. Crank arm material: Carbon. Colour (Crank arm): Natural carbon. Size: 170MM 46/33T, 172.5MM 46/33T, 172.5MM 48/35T; Colour: GLOSS BLACK