Shimano Ultegra BR-R8170 disc brake caliper

The new ULTEGRA BR-R8170 caliper delivers enhanced modulation, a quieter brake system, and an easier than ever bleed process. It 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.

Features

10% wider pad clearance decreases brake noise
Maintenance-friendly bleeding process
Caliper fixing bolt_Anti loosen method: Screw fixing pin, snap ring
Caliper fixing bolt_Tool size: 4 mm
Recommended brake lever: ST-R8170
Recommended disc brake rotor: RT-MT800, RT-CL800
Mount type: Flat mount
Pad mount: Pad axle
Hose joint: Straight
Brake type: Hydraulic disc brake
Real weight: 133 g (referring to front calliper with adapter)
Adapter ONLY included with front caliper
Adapter NOT included with rear caliper (compatible adapter code SM-MA-R160D/D)

Technologies

Ice Technologies
The fade, which can occur to disc brake rotor and pad when braking on a long downhill ride for instance, has a negative impact on the braking performance. 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, aluminum 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.

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.