Shimano BB-MT501 English Bottom Bracket - English 68/73mm Fits Hollowtech II Spindle BLK MFPN=SCW-16 Works on nearly any bicycle

Works on nearly any bicycle spoke no matter what the diameter material or shape

and '12+ Reba models

Compatible with all braze on frames and derailleurs

} Lockring sockets designed for various configurations

Shimano BB-MT501 English Bottom Bracket - English 68/73mm Fits Hollowtech II Spindle BLK MFPN=SCW-16 Works on nearly any bicycleShimano BB MT501 English Bottom Bracket English 68 73mm Fits Hollowtech II Spindle Black. The Shimano BB MT501 bottom bracket for Hollowtech II provides better sealing and rotation to delivery high driving efficiency. TECH SPECS BB Shell Width (mm) 68 BB Shell Width (mm) 73 BB Frame Interface English Bottom Bracket Shell I. D. 1. 37 Defined Color Black Spindle Interface Type Shimano Hollowtech II keyword search bb52 keyword search sm bb52