Monobloks Shimano BB-ES300 BSA 68mm OCTA-121MM

Splined bottom bracket for use with Shimano OCTALINK chainsets. Compatible with 68mm shell Oversize 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 oversize ball bearings - maintenance-free high efficiency rubber seals keep out dirt, mud, and water Cartridge design allows easy installation without adjustment Without fixing bolts Lengths: 113mm, 118mm, 121mm, 126mm Art. Nr.: EBBES300B13, EBBES300B18, EBBES300B21, EBBES300B26