The Shimano Ultegra ST-R8170-RF is a professional-grade Di2 shift and brake lever designed for 12-speed drivetrains. It features a raised hood peak and enhanced ergonomics based on rider feedback to provide improved comfort and a secure grip.

This right-hand lever offers optimized brake control with light, smooth action and an expanded modulation area. It supports both wireless and wired connections and offers up to two years of battery life for reliable, long-term performance.

Quick Facts

Feature	Specification
Drivetrain Speed	12-Speed Di2
Material & Finish	Aluminum with Painted/Coated Black finish
Connectivity	Supports both Wireless and Wired connections
Battery Performance	Up to 2 years of battery life
Braking System	Hydraulic disc brake with expanded modulation area
Expandability	Compatible with additional satellite shifters