Shimano Ultegra Di2 R8170 Front Hydraulic Disc Brake Kit 2x12-speed

The Shimano Ultegra Di2 R8170 front hydraulic brake kit combines an electronic lever with a flat-mount caliper. It is suitable for anyone riding a road bike with a 12-speed Di2 drivetrain, both in races and training.

• Lever and caliper in the same kit, pre-filled with mineral oil
• Ice-Tech brake pads with cooling fins to dissipate heat during braking
• 16.4 mm adjustable lever reach to fit your hand
• Flat-mount caliper with adapter for 140, 160 and 180 mm rotors
• Compatible with 12-speed Di2 groupsets from the R8100, R9200 and R7100 series

Technical specifications

• Series: Ultegra R8100
• Application: Road
• Shifting: 2x, 12-speed, electronic, semi-wireless
• Brake type: Hydraulic, 2-piston; fluid: mineral oil
• Brake hose: SM-BH90-JK-SSR; 1000 mm (front)
• BR-R8170 caliper: Flat mount; aluminium body; resin pistons; straight hose connection
• Compatible rotors: 140 mm, 160 mm, 180 mm
• Pads: Resin with cooling fins (Ice-Tech); narrow shape
• ST-R8170 lever: Aluminium lever; carbon body; closed clamp 23.8-24.2 mm; 16.4 mm reach adjustment; CR1632 battery
• Contents: 1 BR-R8170 brake + ST-R8170; 1 1000 mm hose; 1 pair of brake pads; 1 front disc adapter; olives and connecting pins; 2 caliper bolts