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 type. What’s really neat about Baer's design is the unique backing plate, which not only serves as a caliper mount but also cleverly houses a modern one-piece park brake shoe assembly. Plus, you’ll find stainless braided hoses included for added durability. The 12" SS4 is compatible with most 16-inch or larger wheels, making it a versatile choice. This setup fits 1975-81 GM F-Body Cars with OE Small Pattern 10/12 Bolt C-clip (BIH) housing ends.