If you want proven performance gains, more ground clearance and sound from your Jeep JL 3.6L 2 or 4 door, this Mach Force-XP cat-back exhaust system is what you need. 2-1/2" mandrel-bent 409 stainless steel tubing and 14" high flow muffler improves exhaust flow for increased horsepower and torque. In-house dyno testing resulted in gains of up to +9 horsepower and +8 lbs. x ft. of torque and delivers a noticeable exhaust tone. The Hi-Tuck designed tailpipe "tip" gives you extra clearance during extreme angle climbs or descents and an "Old School" traditional Jeep look. Factory-style hangers, ball flange connection and quality hardware are included for a hassle-free install.