Shimano ES300 Octalink Bottom Brackets. This Octalink bottom bracket is a direct replacement for the ES25 and designed to be used with Shimano Octalink chainsets. Octalink splined axle/crank arm interface results in more rigid crank assembly compared to square tapered spindle.
Oversized BB spindle - large 22mm 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 oversized ball bearings - maintenance-free high efficiency rubber seals keep out dirt, mud, and water
Cartridge design allows easy installation without adjustment
BB Shell Width: 68mm and 73mm
BB Thread Type: English
Spindle Interface Type: Octalink V2
9mm Spline length
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