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 accommodates the widely-used DR1 or HB100 pad types. What sets Baer apart is their innovative backing plate, which not only serves as a caliper mount but also cleverly integrates a modern one-piece park brake shoe assembly. Plus, you’ll find stainless braided hoses included for added durability. The 12-inch SS4 is compatible with most wheels that are 16 inches or larger. This setup is a perfect fit for the 1967-73 Ford Mustang featuring Ford 8"/9" small bearing housing ends.