Shimano
Ultegra ST‑R8170/BR‑R8170 Disc Brake (Front, J‑Kit)
The Shimano Ultegra ST‑R8170 / BR‑R8170 disc brake set delivers smooth, powerful braking with wireless Di2 shifting for a clean, modern cockpit. SERVO‑WAVE technology improves modulation and control, while the updated caliper design offers wider pad clearance and quieter performance.
Features
• Wireless Di2 shifting for a clean cockpit
• SERVO‑WAVE lever technology for improved modulation
• Wider pad clearance to reduce brake noise
• Ergonomic lever shape with raised hood peaks
• Light, smooth lever action with expanded control area
• Flat‑mount 2‑piston hydraulic caliper
• Includes L05A‑RF resin pads with fins
• J‑Kit pre‑bled system for easier internal routing installation
• Mineral oil hydraulic system
• Hose length: 1100 mm (front)
• Compatible with Shimano 12‑speed road Di2
• Rotor sold separately
• Color: Black
• Aluminum construction
Shipping information
Ships in 2–3 business days with free delivery across Canada on orders over $99. Same‑day pickup available Tue–Sat (closed Sun–Mon).
Returns & warranty
Enjoy hassle‑free returns within 30 days on unused items in original packaging (excludes bikes and sale items). Free in‑store returns anytime.