aFe 49-46234 Mach Force XP 2.5" Stainless Steel DPF-Back Exhaust System with Resonators for Jeep Grand Cherokee V6-3.0L Engine 2.5 inch mandrel-bent 409 stainless steel tubing, dual high-flow 4 inch 304 stainless steel resonators OE mounting locations, 4 inch polished 304 stainless steel tips Leak-free seal Hassle-free installation Manufactured and assembled in the USA