Description
The Shimano BB-ES51 sealed cartridge bottom bracket provides consistent, low-maintenance performance for Shimano Octalink cranksets. Shimano designs this unit to keep contaminants out, helping maintain smooth rotation and long service life.
This bottom bracket fits frames with a 73mm BSA threaded shell (BC 1.37″ × 24 TPI) and uses a 118mm spindle, making it suitable for many MTB and hybrid Octalink cranksets where correct chainline is important. Installation stays simple and secure, making it ideal for repairs, refurb builds, and workshop stock from Shimano.
This item is New Old Stock and boxed. It’s unused, factory packed, and ready to fit—offering genuine Shimano quality at a reduced deal price.
Key Features:
- Shimano BB-ES51 bottom bracket
- Octalink crank interface
- 73mm shell width
- 118mm spindle length
- BSA / BC 1.37″ × 24 TPI thread
- Sealed cartridge bearings for low maintenance
- Condition: New Old Stock (boxed, unused)
Details
| Bike Type | Commuter, Cruiser, Gravel, Hybrid, Mountain (MTB), Race, Road, Tandem, Touring, Track, TT, Women’s |
|---|---|
| Colour | Silver |
| Product Type | Bottom Brackets |
| Size/Fit | 118mm, 73mm, BSA, Octalink |
