Keskiö Shimano ALIVIO BB-ES300 BSA 73mm E-Type

Shimano BB-ES300 Bottom bracket with round hollow axle and multi-toothing for Octalink cranksets. Suitable for frames with BSA thread (73 mm). 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. The Shimano BB-ES300-E Octalink bottom bracket is compatible with E-type front derailleurs.