Bearing: Steel bearing. Thread BC1.37 24T.
Hollowtech Threaded Bottom Bracket MTB Road Bike Crank BB Bearing 68-73mm
AEYINO Threaded Bottom Bracket English BSA 68-73mm Steel Bearings Bike BB Bottom Bracket for 24mm Hollowtech Crankset for mountain bike/MTB (Black/Red)
Shimano BB-RS501 HollowTech II Threaded Bottom Bracket
68/73mm Threaded MTB Road Bike BB Fit Shimano IXF Hollowtech II Bottom Bracket
