ACS Crossfire BB cup set Black MFPN=51279 300 lumens rear light

300 lumens rear light

and bottom out resistance at a lower weight than the previous OTT

ISM4D rim machining reduces weight from less stressed areas to close the gap to carbon rims without compromising strength

10 and T20

Carbon crank arms and aluminum 2x thread mount chainring results in a lighter weight stiffer more durable crankset that provides crisp and accurate shifting

ACS Crossfire BB cup set Black MFPN=51279 300 lumens rear lightForged and CNC machined aluminum with precision sealed bearings for 2pc cranks and 24mm spindles BSA 1. 37"x24T for 68 73mm shells Model Crossfire Spindle Interface 24mm Shell BSA Shell ID 33. 6mmx24tpi Width 68 73mm Color Black