Shimano BR-R8170 Ultegra Hydraulic Disc Brake Set Front

All-New Ergonomics, Precise Brake Modulation, & Wireless Electronic Shifting

Control the road with the Shimano Ultegra ST-R8170 Di2 Shifter W/ BR-R8170 Caliper set, designed for the new 2x12 speed Shimano drivetrain.

Shimano's new Ultegra ST-R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO-WAVE technology. The all-new Di2 platform, used on both Dura-Ace and Ultegra, untethers the shifters while delivering the world's fastest, most reliable wireless shifting.

To the delight of riders and mechanics alike, the new Ultegra BR-R8170 caliper delivers enhanced modulation, a quieter brake system, and an easier than ever bleed process.

The Ultegra R8170 disc brake caliper brings a new level of control to the road cycling world with enhanced modulation and a quicker initial braking point. Despite its smaller construction, the system is quieter than ever and easier to maintain.
Features

Clean Cockpit: Wireless connection enhances the aerodynamic effect and easy maintenance
Wireless shifting customization via Shimano E-Tube Project App
High electronic energy efficiency, 1.5 to 2 years of battery life with easy-to-change CR1632 shifter batteries
Unparalleled ergonomics engineering refined with pros' feedback
Raised hood peak improves ergonomics
Optimized brake control
Lighter, smoother lever action
Enhanced modulation thanks to an expanded braking control area
Compatible with wirelessly or wired connection
10% wider pad clearance decreases brake noise
Maintenance-friendly bleeding process