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.
|Option||Barcode||Manufacturer's Part Number||Vendor Number|
|50/34 / Black / 172.5mm||689228607606||IFC5800DX04L||TRK-512656|
|50/34 / Black / 175mm||689228607552||IFC5800EX04L||TRK-512658|