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Shimano BB-ES300 Bottom Bracket

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  • Product Description

    • Splined bottom bracket for use with Shimano Octalink chainsets
    • Oversize BB spindle - large 22 mm diameter hollow cold forged chrome-moly pipe billet spindle reduces weight, increases strength and 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, and water
    • Cartridge design allows easy installation without adjustment

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