PRODUCT SPECIFICATIONS
| MODEL NO | BB-ES51-AK |
|---|---|
| SERIES | SHIMANO |
| Remarks | For FC-M521 only |
| Structure_For chain case | ✔ |
| Spindle_Hollow pipe | ✔ |
|---|---|
| Spindle_OCTALINK | ✔ |
| MODEL NO | BB-ES51-AK |
|---|---|
| SERIES | SHIMANO |
| Remarks | For FC-M521 only |
| Structure_For chain case | ✔ |
| Spindle_Hollow pipe | ✔ |
|---|---|
| Spindle_OCTALINK | ✔ |
