Shimano BB-R9100 Dura-Ace HollowTech II Bottom Bracket 68mm English Thread
- HollowTech II bearing design
- 68mm English thread
- Minimal bearing interface for smooth rotation
The Shimano BB-R9100 Dura-Ace HollowTech II Bottom Bracket delivers the precision and performance that define top-tier racing components. Engineered for the FCR9100 crankset, it combines low weight with high stiffness to maximise power transfer and efficiency. Its refined bearing interface ensures smooth, friction-free rotation, while the distinctive Dura-Ace design showcases the quality and craftsmanship behind Shimano’s flagship drivetrain system.
Key Features and Benefits:
- HollowTech II bearing design: Provides a wider bearing stance for improved axle support and stability. This boosts crank stiffness and reduces flex, improving power transfer under heavy load.
- Minimal bearing interface: Reduces mechanical resistance between moving parts. The result is a smoother, more efficient pedalling motion that maintains speed with less effort.
- Lightweight aluminium cups: Keeps the system weight low without compromising strength. Riders benefit from faster acceleration and a more responsive feel during performance riding and racing.
- Precision bearing seals: Prevent contamination from water or debris. This extends bearing life and ensures consistent performance in all weather conditions.
- Distinctive Dura-Ace craftsmanship: The polished finish and tight tolerances reflect Shimano’s highest manufacturing standards. This provides long-term reliability and a premium look that matches elite drivetrain components.
- Compatibility with FCR9100 crankset: Specifically engineered for Shimano’s flagship road crankset. Guarantees a perfect fit and seamless integration with the HollowTech II system for peak efficiency.
Built for riders who value direct power transfer and smooth operation, this bottom bracket enhances drivetrain performance while keeping weight to a minimum. The HollowTech II system ensures unmatched stiffness and precision for high-intensity efforts, making it ideal for competitive cyclists demanding reliability and speed.
Engineered to fit perfectly with the Dura-Ace FCR9100 crankset, the Shimano BB-R9100 Bottom Bracket offers proven efficiency and durability for serious road riders seeking elite-level performance.
| Brand | Shimano |
| MPN | BBR9100B |
Our Payment Options
Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.
Finance Options
In order to get the kit you want, when you need it, we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.
D.T.(Automotives) Limited T/A Tweeks Cycles is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance, Klarna and Clearpay. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority. Klarna is unregulated credit. Clearpay is unregulated credit, use responsibly, T&Cs & late fees apply.
Our Finance Providers
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D.T.(Automotives)Limited trading as Tweeks Cycles offer interest free and interest-bearing credit on purchases £300 and over which is provided by V12 Retail Finance.
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We also offer Klarna, pay now, pay in 30 days or pay in 3 equal instalments.
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We also offer Clearpay pay in 4 instalments.
UK Mainland Delivery Prices
| Delivery Type | Cost | Estimated Delivery Time |
| Standard Delivery for orders under £49.99 | from £1.33 | 2-3 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Standard Delivery for orders over £49.99 | Free | |
| Bike Delivery | Free | 3-5 working days from day of despatch *(Excludes weekends and Bank Holidays) |
| Express Delivery | from £1.68 | 1-2 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Special Delivery | from £12.54 | For any next working day delivery order before 4.30pm Monday to Thursday. For any weekend delivery order before 4.30pm Friday |
* Bike Delivery Info
A bike has to go though a Pre Delivery Inspection (PDI Check) prior to despatch, ensuring the bike is thoroughly checked and set up prior to you receiving. This also means an express delivery service is unavailable. We strive to despatch bikes within 3-5 working days. Please note this may change over school holidays and the festive season (November/December). For more information on the process please visit our pre-build page.
For international shipping please visit our delivery page.
For information about returning an item please visit our returns page.