Description
The Shimano BB-ES300 Octalink bottom bracket provides dependable support and smooth rotation for Shimano Octalink cranksets. Shimano uses a sealed cartridge design to reduce maintenance and keep performance consistent over time.
This bottom bracket fits frames with a 73mm BSA threaded shell (BC 1.37″ x 24 TPI) and uses a 113mm spindle, making it suitable for many MTB and hybrid Octalink chainsets. Installation stays simple and secure, which makes it ideal for repairs, replacements, and refurb builds.
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-ES300 bottom bracket
- Octalink crank interface
- 73mm shell width
- 113mm spindle length
- BSA / BC 1.37″ x 24 TPI thread
- Sealed cartridge bearings for low maintenance
- Condition: New Old Stock (boxed, unused)
Details
| Bike Type | Commuter, Cruiser, Folding, Gravel, Hybrid, Race, Road, Tandem, Touring, Track, TT, Women’s |
|---|---|
| Product Type | Bottom Brackets |
| Size/Fit | 113mm, 73mm, BSA |


