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 popular DR1 or HB100 pad type. What sets Baer's design apart is its innovative 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 find stainless braided hoses included for added durability. The 12-inch SS4 is compatible with most wheels that are 16 inches or larger, making it a versatile choice for your setup. It fits rear ends with Ford 9" Torino (Late Big) bearing housing ends, with bolt patterns of 5x4.5" and 5x4.75" BC.