Shimano 12-Speed Di2 Electronic Shifting
The ST-R8170 right lever forms part of Shimano’s latest Ultegra Di2 electronic road platform, delivering fast, accurate and repeatable shifting without traditional mechanical cable stretch, friction or contamination.
Wireless Cockpit Communication
Shimano’s semi-wireless Di2 design allows the shift lever to communicate wirelessly with the drivetrain system, reducing cockpit clutter and helping create a clean, modern road bike setup.
Servo Wave Hydraulic Braking
Servo Wave technology improves braking control by changing how pad engagement builds through the lever stroke. Riders get quicker initial pad contact followed by a wider modulation zone for more controlled braking.
BR-R8170 Front Hydraulic Caliper
The BR-R8170 front caliper provides strong stopping power, improved brake modulation and quieter operation. As the front brake delivers the majority of stopping force on a road bike, this setup is ideal for riders wanting more confidence on descents and in fast group riding.
Wider Pad Clearance
The 10% wider pad clearance helps reduce rotor rub, ticking and brake noise, especially after hard braking, wheel removal or heat build-up on long descents.
Improved Lever Ergonomics
The updated hood shape includes a raised hood peak and improved hand support, giving riders better comfort and control during long hours on the hoods, sprinting, descending or braking from high speed.
E-Tube Customisation
Shimano E-Tube compatibility allows button function changes, firmware updates and system diagnostics, making the lever suitable for riders who want a customised Di2 setup.
