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.

Features

• Square Type Bottom Bracket
• Quality/performance cartridge bearing square bottom bracket
• Better chainline stability with chain line stabilizer

Specifications

• Size: 68 x 115mm

BB-UN300 BOTTOM BRACKET 68x115mm D-H w/FIXING BOLTS