Use this exhaust system when you're off - roading or just cruising around town. It's perfect for Jeep Wrangler owners who want to enhance their vehicle's performance and sound. The exhaust is made of 2 - 1/2' mandrel - bent 409 stainless steel tubing and comes with an 18' high - flow muffler. It fits both 2 and 4 door 2007 - 2018 Jeep Wrangler models with V6 - 3.6L/3.8L engines.