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Shimano BB-ES300 68mm Shell Octalink Bottom Bracket - English Thread

Size

Splined 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.
Cartridge design allows easy installation without adjustment.

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