Shimano Ultegra Di2 R8170 2x12v rear brake

Shimano Ultegra R8170 rear hydraulic disc brake is composed of the brake lever and the brake caliper.

Caliper Features:
- Use: Road
- 10% additional pad clearance reduces brake noise
- Simple purging process
- Weight: 123g
- Shimano mineral oil

Handle features:
- Use: Road
- Clear display panel: wireless connection improves aerodynamic effect and allows for easy maintenance
- Unparalleled ergonomics design enhanced with professional input
- The raised peak of the handle improves ergonomics
- Optimized brake control
- Lighter and smoother lever action
- Improved modulation thanks to an enlarged braking control zone
- Compatible with wired and wireless connection
- Available for additional satellite shifters
- High electronic energy efficiency
- 1.5 to 2 battery life with easy to change CR1632 shifter batteries

Technologies:
- Servo Wave: The power multiplier factor then increases rapidly at the “pad/rim” contact point, so that lever travel is used to apply greater braking power with greater control.

- Reach adjust: The brake lever is equipped with a reach adjustment mechanism. The distance between the handlebar grip and the lever can be adjusted to suit any hand size or type of riding, as well as individual rider preference.

- DCL: DCL stands for DUAL CONTROL LEVER. It incorporates the functions of brake and change in the system and allows easy use.
Reference: IR8170DRRDSC170E