The Surly OD Enduro Bottom Bracket is compatible with English threaded frames and 24mm spindles such as Surly OD.
Frame Interface: BSA/English Threaded
Spindle Interface: 24mm (Surly OD, Shimano Hollowtech II, FSA MegaExo, FSA MegaExo Light, RaceFace EXI)
Bottom Bracket Shell ID: 1.37
Shell Width: 100mm