Shimano BB-ES300 73mm Shell Octalink Bottom Bracket - English Thread Size:113mm Hot-Forged for lighter-weight construction

Hot-Forged for lighter-weight construction

Weldtite DOT Brake Fluid - 125ml

Battery CR2032 (included)

The material has been strategically positioned on the jacket to give the maximum amount of retro-reflection

while a quick-deploy piolet system that is compatible with piolets

Shimano BB-ES300 73mm Shell Octalink Bottom Bracket - English Thread Size:113mm Hot-Forged for lighter-weight constructionSplined bottom bracket for use with Shimano Octalink chainsets. Features Oversize BB spindle large 22mm diameter hollow cold forged chrome moly pipe billet spindle reduces weight, increases strength & rigidity. Octalink splined axle crank arm interface results in more rigid crank assembly compared to square tapered spindle. Sealed cartridge assembly with oversize ball bearings maintenance free high efficiency rubber seals keep out dirt, mud & water.