Ultegra BB72-41B Press-Fit Bottom Bracket Vendor_Problem Solvers head set bearings

head set bearings

SCM 415 hardened chromoly steel

Crown Race Seat Dia

Park's unique rotating tip ensures smooth operation and long life

Ultegra BB72-41B Press-Fit Bottom Bracket Vendor_Problem Solvers head set bearingsShimano's Ultegra bottom bracket uses Pro Tour proven technology for lighter weight and super smooth spinning, while still maintaining the same level of durability and stiffness. It's available in English, Italian, or Press Fit models. New seal construction for smoother rotation BB Shell Width (mm): 68 mm BB Frame Interface: BB86 Bottom Bracket Shell I. D.: 41 Defined Color: Black Weight: 69 g Spindle Interface Type: Shimano Hollowtech II