Shimano Ultegra ST-R8170A Di2 Shift/Brake Lever with BR-R8170 Hydraulic Disc Brake Caliper - Right/Rear, 12-Speed, Flat Mount, Black

Control the road with the Shimano Ultegra ST-R8170 Di2 Shifter W/ BR-R8170 Caliper set, designed for the new 2x12 speed Shimano drivetrain.

• Wireless connection enhances the aerodynamic effect and easy maintenance
• Wireless shifting customization via Shimano E-Tube Project App
• High electronic energy efficiency, 1.5 to 2 years of battery life
• Unparalleled ergonomics engineering refined with pros' feedback
• Raised hood peak improves ergonomics
• Optimized brake control
• Lighter, smoother lever action
• Enhanced modulation
• Compatible with wirelessly or wired connection
• 10 percent wider pad clearance decreases brake noise
• Maintenance-friendly bleeding process