SHIMANO 105 BB-5500 OCTALINK BSA BOTTOM BRACKET 68MM trek kids Easy to service and replaceable

Easy to service and replaceable parts

Top Spocket Min: 11T

Originally designed for the banked turns of the velodrome

USB Type-C remote control system

modern and stylish

SHIMANO 105 BB-5500 OCTALINK BSA BOTTOM BRACKET 68MM trek kids Easy to service and replaceableBB 5500 Bottom bracket with round hollow axle and multi toothing for the 105 Octalink crankset. 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 Shimano 105 BB 5500 Octalink BSA Bottom Bracket 68mm Use: Road Group: 105 Model: BB