Shimano BB-UN300-E Bottom Bracket - BSA 68mm - JIS Square Taper - E-Type - 122.5 mm (LL123)

The quality and performance-oriented Shimano BB-UN300-E 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. Suitable for the use of E-Type front derailleurs. Material: adapter: aluminium (left), aluminium / steel (right) axle: steel