Shimano Ultegra Di2 ST-R8170 / BR-R8170 – Shifter + 2x12-speed Hydraulic Disc Brake

The Shimano Ultegra Di2 ST-R8170 / BR-R8170 set combines wireless dual-control electronic shifters with the reliability of flat-mount hydraulic disc brakes. Designed for road cyclists seeking maximum control and ergonomics, it offers professional performance with intuitive and safe handling.

Main features

• Clean, aerodynamic cockpit : wireless connection for a clean look and simplified maintenance.

• Improved ergonomics : raised handguard for a more natural and comfortable grip.

• Optimized braking control : smoother and more modulable lever for safety and power in all conditions.

• Full compatibility : can work both wirelessly and wired.

• Long battery life : Up to 2 years of battery life with easily replaceable CR1632 battery.

• Reach Adjust : custom adjustment of the lever travel.

• Dual Control Lever : a single control for electronic gear shifting and hydraulic braking.

• One Way Bleeding : simple and clean bleeding system, typical Shimano.

Technical specifications

• Use: road

• Series: Shimano Ultegra R8100

• Speed: 2x12

• Control Type: Dual Control, wireless/wired

• Lever material: CFRP (carbon)

• Brake type: hydraulic disc

• Caliper Mounting: Flat Mount

• Caliper pistons: 2 in resin

• Clamp material: aluminum

• Pads included: Shimano L03A resin with fin

• Hydraulic fluid: Shimano mineral oil

• Pipes: SM-BH90-JK-SSR

• Tube length: front 1000 mm / rear 1700 mm

• Weight (single kit): 391 g