Find the Shimano replacement part your bottom bracket needs at Escapa. The Shimano Acera BSA 121/68mm BB-ES300 Octalink bottom bracket with an 8-speed cassette is compatible with MTB and trekking cranksets that are installed on BSA bottom brackets with a shell width of 68 or 73 mm. Compared to its predecessor, the BB-ES25, it is over 25 grams lighter. This is the standard version, which is not compatible with the E-Type or chain cases.
Compatible with: FC-T521, FC-T4010, FC-T3010-8, FC-M523, FC-M522, FC-M4000, FC-M430-8, FC-M3000-8, FC-R345
Features:
- hollow tube construction
- rigid and lightweight for efficient power transmission
- robust construction with reinforcing ribs
- 26 g lighter than the BB-ES25
- Quick and precise installation
- Good chain line control with chain retainer
