DISC BRAKE SET/J-KIT DIRECT, ULTEGRA ST-R8170(R), BR-R8170(R), W/O ADAPTER, FOR 25MM MNT, RESIN PAD (W/FIN), W/CONNECTER INSERT, 1700MM (SM-BH90 BLK)

Experience a new standard in braking control and electronic shifting with the Shimano Ultegra Disc Brake Set, meticulously engineered to provide confident, all-weather performance and a seamless Di2 interface.

The Shimano Ultegra ST-R8170 / BR-R8170 Disc Brake Set is the definitive solution for a complete, high-performance rear braking and shifting system. As a cornerstone of the new 12-speed Di2 platform, this set features the enhanced ergonomics of the ST-R8170 lever for a confident and comfortable grip, while the BR-R8170 caliper delivers superior braking power and modulation. The system comes pre-bled with a generous 1700mm hydraulic hose length, ensuring a straightforward and secure installation for a wide range of road frames. The new Di2 wireless shifting technology provides a clean cockpit and lightning-fast gear changes, making this brake set an essential component for any performance-oriented road build.

• Complete rear hydraulic disc brake set includes lever, caliper, and hose.
• Designed for Shimano Ultegra 12-speed Di2 electronic drivetrains.
• BR-R8170 caliper provides powerful, consistent braking and superior heat dissipation.
• ST-R8170 lever offers enhanced ergonomics and a refined shifting feel.
• Pre-bled system with a 1700mm hose for a quick and simple installation.