Shimano BB5500I09 105 Bottom Bracket Black, 70 109 mm

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 Maintenance-free sealed cartridge design prevents corrosion and is easy to install Aluminium adapter Average weight 250 g