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Shimano BB-5500 105 Bottom Bracket
Shimano BB-5500 105 Bottom Bracket Splined bottom bracket designed for use with Shimano road Octalink crankset Oversize BB spindle – large 22 mm diameter chrome-moly hollow pipe billet spindle reduces weight, increases strength and rigidity Octalink splined axle/crank arm interface – results in a more rigid crank assembly compared to square tapered spindle Maintenance-free sealed cartridge design prevents corrosion and is easy to install Aluminium adapter Average weight 250 g