Description
Description
For chain guard
Stiff and lightweight for efficient power transmission
Robust construction with reinforcing ribs
Quick and precise installation
| Field of application | MTB |
| Axle length | 121 mm |
| Shaft mount | Octalink |
| Housing width | 68 mm |
| thread | BSA |
| groupset | Alivio |
| chain case | compatible with chain guard FC-M521 with spacer 1.8 mm |
| Abbreviation | BB-ES300 |
| Part no. | EBBES300AKB21W |
| Model year | 2015 |
| Product type | Bottom bracket/inner bearing |
