The SHIMANO SM-BB52 HOLLOWTECH II bottom bracket in the 83 mm version is designed for cranksets with a 24 mm integrated axle. It ensures smooth rotation and reliable performance for MTB use.

Use: MTB
Model: SM-BB52-D
BB type: HOLLOWTECH II
Threaded: BSA
Threaded BB shell width: 83 mm
Shell diameter: BSA (BC 1.37)

Compatibility:
FC-M640, FC-M645, FC-M591, FC-T611, FC-M610, FC-M612, FC-M615, FC-M4050, FC-M4060, FC-T4060, FC-M552-L, FC-M552-S, FC-M622, FC-M625, FC-T551-S, FC-T551-L