Dura-Ace Di2 ST-R9170 Shifter/Caliper Kit

Shimano Dura-Ace ST-R9170 Di2 Hydraulic Shifter/Brake Kits: A completely new level of reliability and braking performance is achieved with Dura-Ace disc brakes. Even under challenging weather conditions, the rider can set maximum trust in braking performance. Thanks to the flat mount construction, the BR-R9170 hydraulic disc brake caliper is mounted direct to the frame, giving it a flat profile and higher efficiency. The heat dissipation is greatly improved and this gives the rider stable braking performance throughout the entire ride.

These are sold as a front kit or a rear kit separately.

• Application: Road, Cyclocross
• Brake Type: disc brake, hydraulic
• Mount: flat mount
• Hydraulic Fluid: Shimano mineral oil
• Hose Length: 1000 mm (front) / 1700 mm (rear)
• Material: aluminum, painted, steel bolts (4 mm)
• Caliper info:
• Construction: 2-piece
• Brake Pistons: 2 pistons (ceramic)
• Brake Pads: L02A resin with cooling fins
• Recommended Rotor: SM-RT900 (front 140/160 mm, HR 140 mm (160 mm optionally with adapter)
• One Way Bleeding: yes
• Technology: Ice-Tech