Road riding has never been this much fun. That's because the redesigned ULTEGRA ST-R8170 DUAL CONTROL LEVERS have all-new ergonomics, even more precise brake modulation, and wireless electronic shifting. This trifecta lets you focus on the next sprint, the next descent, or the next joke from your riding partner.

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 our fastest, most reliable wireless shifting. Your time on the bike is precious, let Shimano make it even better.

FEATURES

• Clean Cockpit: Wireless connection enhances the aerodynamic effect and easy maintenance
• 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 wired and wireless connection
• Available to additional satellite shifters
• High electronic energy efficiency
  • 1.5 to 2 years of battery life with easy-to-change CR1632 shifter batteries

TECHNOLOGIES 

SERVOWAVE ACTION

When you pull a SERVOWAVE brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control.

DUAL CONTROL LEVER

DCL stands for DUAL CONTROL LEVER. It has brake and shifting functions in the system and enables easy operation.
Ergonomic innovation is probably more critical to the higher standard performance than the added gearing. The shift internals borrow the robustness from our MTB technology and are so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of SHIMANO TOTAL INTEGRATION, and simply has to be experienced to be understood.

E-TUBE

E-TUBE is Shimano's “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting the riders, the bicycles and SHIMANO.

CUSTOMIZABLE SETTINGS OFF THE BIKE
SHIMANO’s genuine application E-TUBE PROJECT Cyclist allows you to customize your bike, update firmware, and maintain it by connecting it wirelessly to your bike. You can also get the more detailed bike maintenance by connecting to your bike by wire with E-TUBE PROJECT Professional application.

Reach Adjust

Brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences.

SPECIFICATIONS