• Splined bottom bracket for use with Shimano Octalink chainsets.
• 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.