For maximum pedaling efficiency, Shimano's 105 Crankset boasts light, stiff hollow cold forged aluminum arms, plus an integrated oversize-steel axle. The chainrings are also made of cold-forged aluminum and are ramped and pinned for quick, precise shifting. The asymmetrical, four-armed big chainring provides incredible power transfer.
Bottom bracket cups sold separately
|53/39 / Black / 170mm||689228607743||IFC5800CX39L||210000054354|