Shimano Ultegra ST-R8170 Di2 Shifter/Disc Brake Lever

With even-faster shifts, more controllable braking, an updated lever shape, and a very long battery life, these new shifters reset the industry standard, all at a more affordable price than Dura-Ace models.

Shimano's new ST-R8170 brake levers bring enhanced modulation and control to every ride by employing Shimano's proven SERVO WAVE variable-ratio brake lever design.

A new Shimano E-Tube Project App (version 4.0.0) offers intuitive operations for personalizing the Ultegra R8100 drivetrain. Offering a suite of customizable, riders can choose between different shift speeds, customize shift button mapping (what buttons perform which functions), program different automatic shift modes like Synchro and Semi-Synchro shifts, fine-tune shifting, and connect with third party bike computers.

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 with lighter, smoother lever action
• Enhanced modulation thanks to an expanded braking control area
• Compatible with wired and wireless connection
• High electronic energy efficiency
• 1.5 to 2 years of battery life with easy-to-change CR1632 shifter batteries
• 2x12 speed
• Weight: 391g (/pair)