This Flowmaster American Thunder® Cat-back exhaust system for the 2018-2020 Jeep Wrangler JL 2 and 4-door models with the 3.6L engine is perfect for the person looking for a moderate to aggressive exterior and mild interior exhaust tone, with all of the performance benefits that you would expect from Flowmaster®. This bolt-on Dual Out Rear emissions-legal system features a 2.50 in. mandrel bent stainless inlet pipe, a specially designed stainless steel resonator to keep the interior resonance down to a minimum, a stainless steel 80 Series™ cross-flow muffler, and dual 2.50 in. mandrel bent tailpipes. The system finishes with large dual 4.00 in. black ceramic coated Flowmaster stainless steel tips for a stealthy modern look. The system is designed for a perfect fit and includes all necessary parts and hardware for easy installation you can do at home.