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 comes equipped with D.O.T compliant dust and weather seals, and it’s compatible with the widely used DR1 or HB100 pad types. What’s really neat about Baer's design is the unique backing plate, which not only serves as a caliper mount but also incorporates a modern one-piece park brake shoe assembly. Plus, you’ll find stainless braided hoses included for added durability. The 12" SS4 is designed to fit most wheels that are 16 inches or larger, making it a versatile choice for your ride. This setup is compatible with 1979-92 Ford Mustang models that feature the OE Ford 8.8" C-clip rear end (4 Lug).