This impressive system is equipped with the 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 popular 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 cleverly incorporates a modern one-piece park brake shoe assembly. Plus, stainless braided hoses are included for added durability. The 12-inch SS4 is compatible with most wheels that are 16 inches or larger. It’s designed to fit rear ends with Ford 9" Torino (Late Big) Bearing Housing Ends, featuring bolt patterns of 5x4.5" and 5x4.75"BC.