Dura-Ace Di2 ST-R9170 Hydro Shift/Brake Levers

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