Monobloks Shimano BB-UN 300 BSA 73mm

A good quality Shimano bottom bracket. Accurate bearings for smooth operation with improved durability. Durable sealed cartridge bottom bracket with square tapered axle. Sealed cartridge bearing assembly keeps out mud, dirt and water. Better chainline stability with chain line stabilizer.Axle Lengths (OPTIONAL): 110mm, 118mm, 122.5mmCasing Width: 73 mmCasing Standard: BSADurable steel axleAluminium cupsSquare Taper Spindle