PT-6638D

BSA BB30

BC1.37" * 24T

Compatible with BB30 crank / BSA frames

Width:68 / 73mm

Bearings:Sealed cartridge bearings 42 * 7 (R433)

Material:Forged & CNC machined AL6061 cups

Finish:Anodized color available

Option PT-6638DCB Ceramic bearings