Produced with specialized high-temperature silicone, Raybestos Advanced Technology Police loaded calipers are built to satisfy every braking situation, including high-speed pursuits. Loaded with premium Raybestos brand Police disc brake pads, our calipers deliver reliable performance officers can depend on day after day. Silicone dust boots in Raybestos® brand loaded calipers can withstand 2x the heat of regular EPDM rubber for twice the amount of time...that's staying cool under pressure *Please note all calipers are subject to an additional core charge that will be credited upon return of the old caliper*