The D52 caliper is a direct -on 2 piston replacement for the single calipers on many 1968-96 Passenger Vehicles and Trucks. Forged billet aluminum bodies, pistons, and style high-temperature put and end to the , bore pitting, and failures that plague the OE caliper design. D52 calipers provide low-maintenance performance and a huge weight savings with high temperature reliability for the and track. D52 calipers mount in the stock location over stock , use the style OE D52 brake pads and an OE 7/16-20 brake line. Calipers be used with most wheels that clear the OE calipers. The front calipers with 2.00 piston provide 6.28 cubic inches of piston area per caliper, to maintain the front to rear brake bias and use of the OE cylinder. D52 Calipers come hardened slide pins.