This Shimano BB-ES300 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.
- 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
Shimano manufactures a wide range of components for all types of bikes and riders and are best known for their groupsets, wheels and shoes. The innovative company’s components, such as the Di2 electrical components are used in high end road bikes.