Stainless Works Catback Dual Chambered Mufflers Factory Connect2012 2018 Jeep Grand Cherokee 6. 4L Exhaust. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. 3" exhaust system featuring dual turbo chambered mufflers with dual resonators, x pipe, clamps and tips. Designed to fit factory connection point or SW headers. These are TIG welded for strength and durability. These kits come with a lifetime warranty and proudly made in the USA.