Rear Disc Brake Kit Di2 - ST-R8170 + BR-R8170 + Tube - right

Characteristics :

• The wireless connection improves the aerodynamic effect and facilitates maintenance
• Unparalleled ergonomics, perfected with feedback from professionals
• Raised hand guard improves ergonomics
• Optimized brake control
• Lighter, smoother lever action
• Optimized modulation thanks to a larger braking control area
• Compatible with wired and wireless connection
• Available for additional satellite shift controls
• High electronic energy efficiency
• 1.5 to 2 years of battery life with easy-to-replace CR1632 shifter batteries
• The pad clearance increased by 10% reduces brake noise
• Low maintenance purge procedure