This replacement bottom bracket is designed specifically for Shimano Octalink splined hollow-tech cranks. For convenience it comes assembled and greased, all ready for installation.
8-Spline Interface: Oversize axle with 8-splines provides a more rigid interface between the crank arm and bottom bracket.
Fits Shimano FC-M751, FC-M571, FC-M510-8 and FC-M440-8 cranksets.
Large 22mm oversize BB spindle
English (BSA) thread
Drive: Octalink Splined
Spindle: 118mm
Shell: 68mm
Weight: 280g
Crank bolts are not included
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