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, ensuring durability and reliability. It’s designed to work seamlessly with the popular DR1 or HB100 pad types. What’s really neat is Baer’s unique backing plate, which not only serves as a caliper mount but also accommodates a modern one-piece park brake shoe assembly. Plus, you’ll find stainless braided hoses included for added strength and performance. The 12-inch SS4 is compatible with most wheels that are 16 inches or larger, making it a versatile choice for your ride. It fits rear ends with Ford 8"/9" small bearing housing ends, with bolt patterns of 5x4.5" and 5x4.75".