Dura-Ace Di2 ST-R9170 Hydro Disc Brake Set

Shimano dual control hydraulic disc brake levers.

• More controllable and confidence in race condition
• Optimally balanced hydraulic brake system for racing
• Dedicated brake lever shape, stroke, contact point, stiffness and dedicated shift paddles
• Lightweight
• Carbon composite plastic material of hood
• More intuitive, quicker shifting operation
• More defined click feeling and ergonomic shift lever position
• Customizable function to fit any riding style
• Each switch has the option for multi-shift ON or OFF
• E-TUBE project
• Optimum power transmitted with grip firmly
• Ideal ergonomic cover shape with better thickness & tenderness
• Openable hood cover
• Simple set up and maintenance
• Easy replace hood cover
• Openable hood cover
• Customizable the function to fit in rider's riding style