The Shimano Ultegra BB72-41B PressFit Bottom Bracket is designed to offer optimal power transfer and smooth rotation at an economical price. Compatible with press fit BB86 frames and 24mm crank spindles such as Shimano Hollowtech II.
Frame Interface: BB86
Spindle Interface: 24mm (Shimano Hollowtech II, FSA MegaExo, Surly OD, FSA MegaExo Light, RaceFace EXI)
Bottom Bracket Shell ID: PF41
Shell Width: 86.5mm
Weight: 69.0g (Manufacturer Claimed)