This braking system is designed with a robust 4-piston S4 caliper, perfectly paired with a 13-inch, two-piece slotted and drilled rotor that’s zinc-plated for added durability. The S4 caliper is equipped with D.O.T compliant dust and weather seals, ensuring reliable performance in various conditions, and it uses the popular DR1-C pad type for consistent stopping power. You’ll find that the rotors come pre-assembled with high-grade NAS stainless hardware, making installation a breeze. Plus, all necessary mounting brackets and hardware are included for your convenience. The 13" SS4+ is compatible with most wheels that are 17 inches or larger. It's a great fit for 2007-2017 Jeep Wrangler JK, 2018-current Wrangler JL, and 2020-current Gladiator JT models with an OE rear end.