Shimano DURA-ACE BB-R9100 Bottom Bracket
Silky-smooth efficiency at the heart of your drivetrain.
The Shimano DURA-ACE BB-R9100 bottom bracket is engineered to maximize power transfer while minimizing friction and weight. Designed specifically for DURA-ACE R9100-series cranksets, it delivers the reliability and precision expected at the highest level of road racing.
Featuring high-quality sealed bearings and a threaded interface, BB-R9100 ensures quiet operation, long service life, and consistent performance in all riding conditions—ideal for riders who demand durability without compromise.
Key Highlights
- Race-Proven Bearings: Low-friction sealed bearings for smooth, efficient power transfer
- Threaded Reliability: Proven threaded design for quiet operation and easy serviceability
- Lightweight Construction: Just 65g for uncompromising performance
- DURA-ACE Integration: Optimized for R9100-series cranksets
- Multiple Standards: Available in English and Italian thread options
Specifications
- Series: DURA-ACE
- Generation: R9100
- Bottom Bracket Type: Threaded (Thread In)
- Thread Standards: English (BSA), Italian
- Shell Width: 68mm (English), 70mm (Italian)
- Crank Interface: Threaded
- Cup Diameter: N/A
- Spindle Length: N/A
- Weight: 65.0g
Why DURA-ACE?
DURA-ACE components are designed with a singular goal: absolute performance. The BB-R9100 bottom bracket provides the smooth, dependable foundation your drivetrain needs to perform flawlessly—ride after ride, season after season.
Pure efficiency. Zero compromise.
Shipping rates and eligibility are calculated at checkout.
All bikes are professionally assembled, tuned, and carefully repacked before shipping to ensure they arrive in perfect condition.
Please note that some brands and models are not eligible for shipping due to manufacturer restrictions.
For special delivery requests or white-glove transport, please contact us for a personalized quote.
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For service appointments, repairs, or bike fitting, contact service@categoryonecycles.com
You can also reach us by phone at (610) 509-3554