The quality and performance-oriented Shimano Alivio BB-ES300 cartridge bearing bottom bracket features an Octalink square taper mount for ultra-efficient power transfer. and is designed for frames with BSA thread and 68mm shell width. A stabilizer ensures a constant chain line.

Features

• Hollow-Type Bottom Bracket
• Quality/performance cartridge bearing
• Better chainline stability with chain line stabiliser

Specifications

• Size: 68 x 118mm
• Type: Hollow-Type
• Without fixing bolts