Why Choose Our Catback Exhaust?; . Gives the Explorer ST a more aggressive sound; . Reduces weight; . Improves fuel economy; . Comes with a lifetime warranty; We use only the highest quality materials and construction in our catback exhausts. Our systems are designed to fit your customer's vehicle perfectly and provide years of trouble-free performance. We also offer a lifetime warranty on all of our products so you can be sure that your customer's investment is protected.; Features:; . 3" mandrel-bent stainless steel tubing; . Choose Between Polish Tips or Black Tips; . Aggressive tone with no drone; . Can be used with the stock downpipe or our new downpipe; Benefits:; . Improves horsepower and torque