
Shimano BB-UN300-K Bottom Bracket - BSA 68mm - JIS Square Taper - for Chain Case
The quality and performance-oriented Shimano BB-UN300-K 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 using a chain case. Material: adapter: aluminium (left), aluminium / steel (right) axle: steel











