Rigidity is key to obtaining a consistent, crisp braking feel. The new PM Race Series Radial Mount Caliper with ARC (Advanced Radiant Cooling) technology is designed to improve your braking feel by providing more rigidity and maximum cooling efficiency. With ARC, Performance Machine once again redefines industry standards addressing one of the most critical factors in high-performance braking: heat control. Performance Machine delivers a solution that ensures optimal performance, even under the most demanding conditions. The PM Race Series Radial Mount calipers work with 108mm radial mount caliper applications.