This system showcases the impressive S4 4-piston caliper, perfectly paired with a 12-inch, one-piece slotted and drilled zinc-plated rotor. The S4 caliper is designed with D.O.T compliant dust and weather seals, and it works seamlessly with the popular DR1 or HB100 pad types. What makes Baer's design stand out is its unique backing plate, which not only serves as a caliper mount but also cleverly incorporates a modern one-piece park brake shoe assembly. You'll also appreciate the inclusion of stainless braided hoses for added durability. The 12-inch SS4 is compatible with most wheels that are 16 inches or larger. This setup is a great fit for the 1993 Ford Mustang equipped with the OE Ford 8.8" C-clip rear end, 5 Lug.