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. Features & Benefits Outlasts and Outperforms Stock Exhaust Hi-Tuck Design For Clearance and Greater Approach Angles 100 Percent Hand MIG-Welded For Strength and Durability Factory Style Bayonet Hangers Ball Flange Connection Quality Hardware For Easy Installation Additional Attributes Clamps Included: Yes Exhaust Tip Cut: Angled Exhaust Tip Diameter: 3.50 Exhaust Tip Finish: Black Powder Coat Exhaust Tip Material: 409 Stainless Steel Exhaust Tip Quantity: 1 Exit Style: Hi-Tuck Finish: Natural Grade Type: Performance Hangers Included: Yes Horse Power Increase: 9 Inlet Type: Flared Main Piping Diameter: 2.5 Muffler Body Shape: Round Muffler Finish: Natural Muffler Quantity: 1 Pipe Material: 409 Stainless Steel Sound Level: Moderate Tip Shape: Round Tip Shape: Turn-Down Torque Increase: 8 WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov