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Low Q-factor and increased heel clearance
which prevents it from getting caught in your bike’s spokes
Secure closure system with loops to hold the straps in place on the back of the knee/shin to ensure the protector is fully secured
520-percent gear range
Size : 32T
Shimano BB-ES300 Octalink Bottom Bracket 68x113mm Hollow Type 00.3018.290.001 Low Q-factor and increased heelTechnologies Octalink Compared the power transfer of OctaLinkwith 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. Specifications Axle Length Shell Width 113 68 mm (BC1. 37) 113 70 mm (M36) 113 73 mm (BC1. 37) 118 68 mm (BC1. 37) 118 70 mm (M36) 118 73 mm (BC1. 37) 121 68 mm (BC1. 37) 121 73 mm (BC1. 37) 126 68 mm (BC1. 37) 126 73