Shimano BB-UN300 Bottom Bracket - BSA 68mm - JIS Square Taper - 110mm

The high-quality and high-performance Shimano BB-UN300 cartridge bottom bracket comes with a JIS 4-sided mount and is suitable for frames with BSA thread and 68 mm housing width. A stabilizer ensures a constant chainline. Material: Adapter: aluminum (left), aluminum / steel (right). Axle: steel