Your time on the bike is precious, let Shimano make it even better. Ultegra ST-R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO-WAVE technology. The Di2 platform untethers the shifters while delivering fast and reliable wireless shifting. BR-R8170 disc brake caliper brings a new level of control to the road cycling world with improved modulation and a quicker initial braking point. Despite its smaller construction, the system is quieter than ever and easier to maintain
The wireless connection provides a clean cockpit, enhancing the aerodynamic effect and easy maintenance
Wider pad clearance decreases brake noise
Maintenance-friendly bleeding process
Unparalelled ergonomic features, such as raised hood peaks on levers
Brake control is optimized with light and smooth lever action
Enhanced modulation thanks to an expanded braking control area
Compatible with wireless or wired connection
Rotor Included: No (sold separately)
Pad Compound: Resin
Brake Caliper Mount: Flat Mount
Hydraulic Hose Length: 1100mm front; 1700mm rear
Hydraulic Fluid Type: Mineral Oil
Brake Lever Actuation: Hydraulic
Rear Der/Shifter Compatibility: Shimano Road Di2
Drivetrain Speeds: 12
Color: Black
J-Kit Technology: For some frames with internal routing, the J-Kit version may be easier to install, since everything is pre-bled. Disconnected lever comes pre-bled with connecting bolt/built in olive pre-installed. Brake caliper is pre-bled with brake hose connected/capped
