Shimano ES30 Octalink Bottom Bracket
Shimano ES30 octalink bottom bracket, available in 113mm axle with English or Italian cups.
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
V2 MTB compatible
Cartridge design allows easy installation without adjustment