Shimano Dura-Ace BR-R9270 Flat Mount Brake Caliper

Top of the range, high performance Dura-Ace low profile hydraulic road disc brake for efficient braking in all conditions.

With an all-new design, Dura-Ace BR-R9270 hydraulic calipers are Shimano's most compact yet. Mono-Body construction ensures light weight and rigidity, proving that good things can come in small packages.

With an all-new Mono-Body construction design, high performance braking has reached a new peak. The BR-R9270 caliper drops weight while also providing increased pad clearance, ensuring a quieter ride. Lastly, a new bleeding process makes maintenance easier than ever.

Technology

Mono-Body

Shimano’s Mono-Body caliper is machined from a single cold forged block in order to maximize stiffness. A perfect balance of stiffness and weight, the Mono-Body caliper is a component of Shimano's linear response hydraulic disc brake system. Linear response equals strong power and superb controllability.

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. 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

• Front wheel use for flat mount forks with adapter to flip between 140 and 160mm
• Oversized 22mm ceramic pistons optimized for heat insulation, lightweight and stiffness
• Opposed 2-piston design reduces leading effect and optimal pad wear
• Improved pad to rotor clearance with 10% increase pad clearance over BR-B9170 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 RT-MT900 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