The set Ultegra Di2 STR8170 + BRR8170 consisting of brake lever + disc brake offers you the best that is currently available on the market. In every detail you can see the years of experience of the Japanese. Regardless of functionality, durability or weight, top values are achieved everywhere.
The new lever ergonomics of the Ultegra Di2 STR8170+BRR8170 DUAL CONTROL shift/brake levers offer a new level of comfort and control for road cyclists. Thanks to our fastest wireless shifting performance and even more precise braking force regulation, the Ultegra sets new standards in terms of performance.
Thanks to the brand new design, our Ultegra BRR8170 hydraulic brake caliper is more compact than ever. The mono-body design ensures low weight and high rigidity, proving that high performance is possible even with compact dimensions.

Data shift/brake lever:
- tidy cockpit, aesthetic look thanks to wireless connection
- wireless shifting, precise and fast (rear derailleur / front derailleur with wiring)
- CR1632 battery, easy to replace with a flathead screwdriver, 1.5 to 2 years run time
- unique ergonomics thanks to feedback from professional riders
- Servo Wave technology for optimal braking control
- Low weight thanks to carbon brake levers
- Assembly: clamp (closed)
- Reach adjustment: screw
- Adjustment options: Reach adjustment, pressure point adjustment

Data caliper:
- one-piece construction for maximum rigidity and lower weight
- 10% larger brake pad spacing minimizes brake disc grinding, less noise
- Braking performance optimally tuned for racing
- Harmonious look and easy access to tools thanks to Flat Mount
- Mounting: flat mount
- Brake pad: Resin with cooling fins
- Construction: mono body

(Translated with Google Translate)