

Shimano Dura Ace BB-R9100
The Shimano Dura Ace BB-R9100 is a Hollowtech II bottom bracket with small ball bearings for lightweight performance and advanced seals for smooth rotation. It suits road racers running Hollowtech II cranks who prioritize durability and low friction.
- Hollowtech II bottom bracket with small ball bearings for lightweight
- Advanced seal construction for smoother rotation
- Available in 68mm BSA or 70mm Italian
- Compatible with all road Hollowtech II cranks
Pre-order — expected in stock September 25, then ships direct to you.
Pairs well with

Shimano Dura Ace BB-R9100
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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