Shimano Dura Ace bottom bracket
BB-R9100 ITA/BSA
Bottom bracket with small ball bearings for lightweight and new seal construction for smoother rotation.
- For Dura Ace 9100
- BB shell width: 70 mm (ITA), 68/73 mm (BSA)
- Spindle: 24 mm
- Real weight: 68 g
SM-BB92-41B Pressfit
Bottom Bracket Shimano SM-BB92-41B Press Fit for 9000/9100 Dura Ace.
- BB shell size: 86.5 x 41 mm
- Spindle: 24 mm
- Real weight: 57 g