Shimano Ultegra Di2 R8150 2x12 Rim Brake Groupset

If you want modern, wireless Di2 shifting and the classic feel of rim brakes, the new Shimano Ultegra Di2 R8150 2x12 Rim Brake kit delivers pro-level speed, comfort, and control—at a price that makes sense for serious riders. At Bike Clinique, we’re fully manufacturer-trained and have extensive experience fitting Ultegra Di2, so you get a flawless install, precise tuning, and ongoing support.

Why Choose Ultegra Di2 R8150 Rim Brake at Bike Clinique?
Ultegra Di2 R8150 brings the “Science of Speed” to your road bike, with lightning-fast, fully customisable shifting, a wide-range 12-speed cassette, and the legendary light weight and modulation of SLR-EV rim brakes. The wireless lever-to-derailleur setup means a clean cockpit and easier installation—while the internally wired battery ensures absolute reliability and a stable power supply.

What’s Included:

• Shifters: Ultegra Di2 ST-R8150 Dual Control Levers

• 2x12-speed, SLR-EV rim brake compatibility, wireless shifting, individually adjustable reach, and E-Tube app customisation for shift speed, button assignment, and more.

• Brakes: Ultegra BR-R8100 Dual Pivot Calipers (Direct Mount options available)

• Lightweight, powerful, and designed for predictable, linear braking. Clearance for up to 28C tyres.

• Crankset: Ultegra FC-R8100, 2x12-speed

• Chainring options: 50-34T, 52-36T, 46-36

• Hollowtech II arms for maximum stiffness and low weight

• Crank lengths: 160, 165, 170, 172.5, 175mm

• Front Derailleur: Ultegra Di2 FD-R8150, braze-on, 2x12-speed

• Compact, aerodynamic, and precise—engineered for seamless, digital front shifting.

• Rear Derailleur: Ultegra Di2 RD-R8150 Shadow+, 2x12-speed

• Wireless integration, low-profile design, compatible with 11-30T and 11-34T cassettes.

• Cassette: Ultegra CS-R8100, 12-speed

• Choose 11-30T or 11-34T. Hyperglide+ for seamless, fast shifting under load. Compatible with standard 11-speed freehub bodies.

• Chain: XT/Ultegra CN-M8100 12-speed, with Quick-Link for easy installation and SIL-TEC for quiet, long-lasting performance.

Specs at a Glance:

• 2x12-speed (Di2 electronic shifting)

• Crank Lengths: 160, 165, 170, 172.5, 175mm

• Chainring Options: 50-34, 52-36, 46-36

• Cassette: 11-30T or 11-34T

• Brakes: Dual Pivot or Direct Mount rim calipers, SLR-EV

• Tyre Clearance: Up to 28C

• Freehub: Shimano 11/12-speed Road

• Color: Series color (black/silver)

How Does It Ride?
Ultegra Di2 R8150 Rim Brake gives you the best of both worlds: the classic weight and feel of rim brakes, and the instant, flawless shifting of Shimano’s latest Di2. Your cockpit is clean, your shifting is always precise, and your braking is powerful and confidence-inspiring—whether you’re racing, chasing a PB, or just enjoying the ride.

Why Trust Bike Clinique?
With full Shimano manufacturer training and years of hands-on experience, you get expert advice, a perfect install, and ongoing support. We’ll check your frame compatibility, walk you through crank and cassette options, and provide a clear estimate before any work begins.

Ready to experience the next generation of rim brake performance?
Book a consultation, schedule your upgrade online, or call us on 07951125843. Pop into our Wimbledon workshop for a demo, get honest, jargon-free advice, and let us help you unlock the best of Shimano Ultegra for your next ride.