These Wilwood GM D52 calipers are direct 2-piston, bolt-on replacements for the factory original single calipers on many 1968-96 GM passenger vehicles and trucks. They feature forged billet aluminum bodies, stainless steel pistons, and competition-style high-temperature seals. They put an end to the rust, bore pitting, and seal failures that plague the OE caliper design. Wilwood GM D52 calipers provide low-maintenance performance and a huge weight savings with high-temperature reliability for the street and track. They mount in the stock location over stock rotors and use the original-style OE D52 brake pads and an OE banjo bolt brake line. The calipers can be used with most wheels that clear the OEM calipers. They include Wilwood's hardened slide pins.