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
|50/34 / Black / 170mm||689228607569||IFC5800CX04L||29945|
|50/34 / Black / 172.5mm||689228607606||IFC5800DX04L||35825|