Shimano Deore ES30 Octalink 113mm bottom bracket
- For 68mm frame
- Splined bottom bracket for use with Shimano Octalink chainsets
- Oversize BB spindle - large 22 mm diameter hollow 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 - maintenance-free sealed cartridge keeps out dirt, mud, and water
- Cartridge design allows easy installation without adjustment
- Aluminium adapter ring
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