SRAM S-300 1.1 Courier Crankset – 170mm Single Speed 48t 130 BCD GXP Spindle Interface BLK

SRAM S-300 1.1 Courier Crankset - 170mm Single Speed 48t 130 BCD GXP Spindle Interface Black. Crank arms are forged aluminum use the same bottom bracket interface as high end models.AL-6061 forged arms AL-7075 ringIncludes English threaded GXP cup and bear