Shimano Deore LX ES51 Splined Sealed English Thread Bottom Bracket 68 mm Shell 118 mm

Splined bottom bracket for use with Shimano Octalink chainsets
Oversize BB spindle - large 22 mm diameter hollow 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
ES51 has anti-corrosion treatment inside hollow spindle
Sealed cartridge assembly - maintenance-free sealed cartridge keeps out dirt, mud and water
Cartridge design allows easy installation without adjustment
Average weight 262 g