BR-R8170 Rear Disc Brake Ultegra w/L03A Resin Pad

The ULTEGRA R8170 disc brake calliper brings a new level of control to the road cycling world with enhanced modulation and a quicker initial braking point.

Despite its smaller construction, the system is quieter than ever and easier to maintain.

ICE TECHNOLOGIES

SHIMANO ICE TECHNOLOGIES components deliver more consistent braking performance by reducing heat buildup in the system. This helps prevent brake fade, which can happen when a rider applies the brakes repeatedly and strongly over a short period of time, such as when descending a long, steep hill. SHIMANO ICE TECHNOLOGY disc brake rotors and pads reduce heat buildup and provide consistent and reliable braking power available. The rotors feature a 3-layer stainless steel-aluminium-stainless steel sandwich design that radiates heat for better performance. The brake pads have an aluminum radiating fin that helps dissipate heat throughout the system. Together, ICE TECHNOLOGY rotors and brake pads deliver a quieter ride while reducing brake fade and extending pad life for a more reliable and confident riding experience.

ONE WAY BLEEDING

“ONE WAY BLEEDING” was developed for quick and easy prevention of air in our hydraulic system. We have streamlined the oil route throughout the system to prevent air bubbles from being captured in the system.
One way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding system.

Features and Specifications:

• 10% wider pad clearance decreases brake noise
• Maintenance-friendly bleeding process
• Pad Compatibility:
  • K05S-RX Resin (w/o fin)
  • L05A-RF Resin (w/ fin)
  • L04C-MF Metal (w/ fin)
• Fixing screw spec for rear mount
  • ✔ 10 mm mount
  • ✔ 15 mm mount
  • ✔ 20 mm mount
  • ✔ 25 mm mount
  • ✔ 30 mm mount
  • ✔ 35 mm mount
• Recommended brake lever: ST-R8170
• Recommended disc brake rotor: RT-MT800 RT-CL800
• Oil: SHIMANO mineral
• ONE WAY BLEEDING: ✔
• Mount type: Flat mount
• Piston: 2
• Calliper fixing screw:
  • Tool size: 4 mm
  • Anti loosen method: Screw fix pin+Snap ring
• Pad mount: Pad axle
• Average weight: 123g