
Shimano BR-R8100 Ultegra Brake Caliper
- Improved rigidity & improved braking power
- Spring tension adjuster for precision set-up
- Increased clearance for 28mm tyres
The Shimano Ultegra R8100 series Caliper brakes offer a clear contact feeling while balancing rigidity, weight, and stopping power. With increased clearance for 28mm tyres, the sleek design is still fetching. They are available in traditional and direct mount options.
- Ultegra components offer an ideal balance of light weight and stiffness, making it the perfect choice for both enthusiast and competitive riders
- Dual-pivot calliper brake with super SLR-EV design for quick linear response, increased rigidity and improved braking power
- Must be used in conjunction with super SLR levers for correct leverage ratio
- Enhanced brake arch proportions give a quicker linear response and increased power
- Low profile outer cable stop position improves cable routing for reduced friction
- Spring tension adjuster for precision set-up
- Adjustable toe-in on the brake shoes for easy set up
- Added clearance for compatibility with 28C tyre size
Option | Front, Rear |
Brand | Shimano |
MPN(s) | BRR8100F, BRR8100R |
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.
* 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.



