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 equipped with D.O.T compliant dust and weather seals, ensuring durability in various conditions, and it utilizes the widely popular DR1 or HB100 pad type. What sets Baer's design apart is its innovative backing plate, which not only serves as a sturdy caliper mount but also incorporates a modern one-piece park brake shoe assembly. Plus, you'll appreciate the included stainless braided hoses for added reliability. The 12-inch SS4 is compatible with most 16-inch or larger wheels and is designed to fit Ford 8.8" C-Clip Rear Ends with a 2.5" axle standoff, featuring a 5-lug configuration.