SHIMANO BB-ES51 OCTALINK BOTTOM BRACKET 68mm exclude_standard_shipping Weight optimized

Weight optimized

whilst incredible practicality comes courtesy of the adaptable rear light mount

This versatile tool features a lockring wrench for external splines

reliable solution for mountain bikers who want to focus on the trail ahead

SHIMANO BB-ES51 OCTALINK BOTTOM BRACKET 68mm exclude_standard_shipping Weight optimizedShimano BB ES51 Bottom bracket with round hollow axle and multi toothing for Octalink cranksets. Suitable for frames with BSA thread (68mm). Compared the power transfer of OCTALINK with the conventional square taper spindle, the 8 splined OCTALINK interface that connects bottom bracket and crank set increases the strength and rigidity for entire assembly. Specification Model: BB ES51 BB Type: Octalink Threaded: BSA Threaded BB shell width: 68mm Axle