Shimano BB-UN300 Bottom Bracket - BSA 68mm - JIS Square Taper - 118mm

The quality and performance-oriented Shimano BB-UN300 cartridge bearing bottom bracket features a JIS square taper mount and is designed for frames with BSA thread and 68 mm shell width. A stabilizer ensures a constant chain line. Material: adapter: aluminium (left), aluminium / steel (right) axle: steel