Sram Force 1 X-SYNC GXP Crankset 50Tx170 CarbonThe Sram Force 1 X-SYNC GXP Crankset simplifies the expression of shifting with a wide range of resistances without sacrificing power or precision. The X-SYNC design consists of a wide/narrow tooth alternation which increases the control of the chain significantly. The unidirectional carbon crankarm paired with the forged alloy spider produces a lightweight, yet durable base to explore the trails or seriously compete in cyclecross races. Solid 50 tooth chainring. Weighs less than 750 grams! Available in 170, 172.5, and 175mm crankarm lengths.710845770449