Bottom Bracket. Threaded. HOLLOWTECH II. 68 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
- Average weight 65
- HOLLOWTECH II bottom bracket
- Threaded bottom bracket shell width: 68 mm
- Threaded bottom bracket shell width: 70 mm
- Small ball bearing
