- Octalink V2 compatible
- Labyrinth seals keep contamination out of bearings
- Standard BSA threading
- 22mm hollow spindle
- Shimano Reference Number: BB-ES51
the smooth sealed bearings of the Shimano BB-ES51 will keep you pedaling smoothly for miles.
the smooth sealed bearings of the Shimano BB-ES51 will keep you pedaling smoothly for miles.