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SHIMANO DURA-ACE - Bottom Bracket - Threaded - HOLLOWTECH II - 70 mm shell width
With an advanced seal construction for smoother rotation and small ball bearings to minimize weight, the SHIMANO DURA-ACE bottom bracket is offered in both pressfit and threaded options.
- Bottom bracket with small ball bearings for lightweight
- Advanced seal construction for smoother rotation
| MODEL NO | BB-R9100 |
|---|---|
| SERIES | DURA-ACE R9100 Series |
| Average weight | 65 |
| Threaded BB shell width_70mm | ✔ |
| HOLLOWTECH II BB_Threaded BB type | ✔ |
|---|---|
| Small ball bearing | ✔ |
| Threaded BB shell width_68mm | ✔ |