SHIMANO 105 BB-5500 OCTALINK BSA BOTTOM BRACKET 68MM Finance Type: 4 ports junction

Type: 4 ports junction

Middle Chainring: Steel

Wider range front gearing

Composite frameset is designed specifically for front suspension

SHIMANO 105 BB-5500 OCTALINK BSA BOTTOM BRACKET 68MM Finance Type: 4 ports junctionBB 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