Shimano Disc Brake Kit Front. Ultegra Di2 ST-R8170+BR-8170+Tube

- Clean cockpit: wireless connection improves aerodynamic effect and facilitates maintenance

- Unparalleled ergonomics

- Raised structure that improves ergonomics

- Lighter and smoother lever action

- Optimized modulation thanks to a larger braking control area

- Compatible with wired and wireless connection

- High electronic energy efficiency

- 1.5 to 2 years of battery life with CR1632 gearbox control batteries

- Padroom distance increased by 10% reduces brake noise.

- Low maintenance purge procedure

- Flatmount pliers