SHIMANO 105 BB-5500 OCTALINK BSA BOTTOM BRACKET 68MM trek kids A kickplate helps prevent wear

A kickplate helps prevent wear and tear making this one robust adventure companion

modern and stylish

USB Type-C remote control system

Trek protective armour

SHIMANO 105 BB-5500 OCTALINK BSA BOTTOM BRACKET 68MM trek kids A kickplate helps prevent wearBB 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