Road riding is all about speed, but stopping is equally as important. The Shimano Ultegra BR-R8170 Brake Caliper delivers enhanced modulation, a quieter brake system, and an easier than ever bleed process. The R8170 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.