Performance Machine 125 X 4 Race Series Radial Mount Calipers Essential for a consistent, sharp braking response, the PM Race Series Radial Mount Caliper leverages ARC (Advanced Radiant Cooling) technology to enhance stiffness and optimize cooling efficiency. By addressing heat management, a critical component of high-performance braking, Performance Machine sets new benchmarks. The innovative design of piston and caliper ensures unrivaled performance under extreme conditions. These 108mm radial mount calipers, suitable for applications with ABS and non-ABS braking systems, come in a sleek Black Ano finish. Features: CNC machined from billet aluminum Increased rigidity for improved braking performance ARC Technology for maximum cooling efficiency Chrome mounting hardware included Designed for use with .200 thick discs ABS and Non-ABS compatible For use with radial mount caliper applications with 108mm mounting bolt spacing Sold individually Made in the USA