SHIMANO ACERA - Bottom Bracket - OCTALINK - 121 mm Axle Length - 68 mm Shell Width
Stiff and lightweight for efficient power transfer, OCTALINK uses a quick and precise assembly and a reinforced spline construction.
FEATURES
- Stiff and lightweight for efficient power transfer
- Durable spline reinforced construction
- 8-splined OCTALINK interface increases the strength and rigidity of the entire assembly
- 26 g lighter weight than BB-ES25
- Quick and precise assembly
- Good chain line control with chain stabilizer
PRODUCT SPECIFICATIONS
| MODEL NO | BB-ES300-AK |
|---|---|
| SERIES | SHIMANO ALIVIO T4000 Series |
| Remarks | * w/ 1.8 mm spacer version also available for FC-M521 |
| Structure_For chain case | ✔ |
| Axle length/shell width (mm)_121_68 (BC1.37) | X* |
|---|---|
| Spindle_Hollow pipe | ✔ |
| Spindle_OCTALINK | ✔ |
