This Tripeak Bottom Bracket is BSA threaded and recommended for Ultegra, 105, GRX, FC-CX70 and other Hollowtech II compatible cranks with 24 mm axle. Bottom bracket shells with BSA thread are 68 mm wide. Suitable for frames with (B.C.1.37" x 24T) English thread.
Spindle Interface Type: Hollowtech II (24mm Dia)
Application: Road, Cyclocross, City, Gravel
Type: BSA (Threaded, English)
Finish: Aluminium 6061-T6 CNC machined
Shell Width: 68 mm