Shimano Ultegra BR-R8170 Flat Mount Caliper

Ultegra hydraulic road disc brake offer an ideal balance of light weight and efficient braking, making it the perfect choice for both enthusiast and competitive riders.

To the delight of riders and mechanics alike, the new Ultegra BR-R8170 caliper delivers enhanced modulation, a quieter brake system, and an easier than ever bleed process.

The Ultegra R8170 disc brake caliper 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.

Technology

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 has adopted Ice Technologies disc brake rotor and Ice Technologies pad to realize the cooling technology for consistent performance. The clad disc brake rotor blade, which has a 3 layer-sandwich structure of stainless steel, aluminium and stainless steel, provides better radiation performance. Also, the radiation fin has been adopted for the pad. Moreover, the clad disc brake rotor blade and the radiator fin provide long pad life, less noise, less fade and lightweight.

Clad rotors as well as Clad Brake pads significantly reduce heat build-up in the brake system. This in turn reduces fading, which ensures consistent high performance even on long downhill stretches, It also results in a longer pad life and substantially quieter braking.

One Way Bleeding

“One Way Bleeding” was developed for quick and easy prevention of air in Shimano's hydraulic system. Shimano 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

• Front wheel use for flat mount forks with adapter to flip between 140 and 160mm
• Oversized 22mm ceramic pistons optimised for heat insulation, lightweight and stiffness
• Opposed 2-piston design reduces leading effect and optimal pad wear increases braking control
• Increased pad to rotor clearance reduces the chance of rotor drag
• Direct flat mount and open design allows easy and quick wheel replacement
• Forged caliper design is lightweight and rigid
• One way internal fluid circuit makes bleeding easy
• Mineral oil brake fluid is non-corrosive and less hazardous than conventional hydraulic brake fluid
• Shim-less mounting bracket allows for quick installation and setting up
• Recommended for use with Ice Tech Freeza Center Lock SM-MT800 rotors for optimum braking performance
• Comes complete with resin compound aluminium radiation fin pad further improves heat dissipation reducing brake surface temperature by 50 degrees C
• Inline hose routing for low profile design
• Separate bleed port and valve screw for improved bleeding process