The Wilwood BP-20 pad set (D52-20) matches D52 GM caliper geometries and lists pad faces at 0.58 in and 0.52 in thicknesses. Supplied as a BP-20 compound replacement set for D52 GM applications, verify which caliper position corresponds to each thickness when replacing pads to ensure correct fit and clearance.
Wilwood Pad Set BP-20 D52-20 D52, GM (.58in & .52in Thick