This aFe Scorpion exhaust system is perfect for Jeep Wrangler JK owners who love off - road adventures. Whether you're rock crawling or cruising on the highway, it'll enhance your driving experience. The system is made of 2 - 1/2 inch mandrel - bent aluminized steel tubing. It comes with an 18 - inch chambered muffler and all the necessary hardware for installation. It fits a wide range of 2007 - 2018 Jeep Wrangler JK models with V6 3.6/3.8L engines, making it a great choice for many Jeep enthusiasts.