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.
- Hollow-Type Bottom Bracket
- Quality/performance cartridge bearing
- Better chainline stability with chain line stabiliser
- Size: 68 x 118mm
- Type: Hollow-Type
- Without fixing bolts