PRODUCT SPECIFICATIONS
| MODEL NO | BB-ES51-AK |
|---|---|
| SERIES | SHIMANO |
| Remarks | For FC-M521 only |
| Structure|For chain case | ✔ |
| Spindle|Hollow pipe | ✔ |
|---|---|
| Spindle|OCTALINK | ✔ |
CYCLING
| MODEL NO | BB-ES51-AK |
|---|---|
| SERIES | SHIMANO |
| Remarks | For FC-M521 only |
| Structure|For chain case | ✔ |
| Spindle|Hollow pipe | ✔ |
|---|---|
| Spindle|OCTALINK | ✔ |
