Flow Master's Outlaw Axle-Back Exhaust System For The 2018 Jeep Wrangler Jul. With The 3. 6L V6 And 2. 0L Is Perfect For The Person Looking For An Aggressive Exterior And Moderate Interior Exhaust Tone, With All Of The Performance Benefits That You Would Expect From Flow Master. This Bolt-On Door (Dual Out Rear) Emissions-Legal System For The 2 And 4 Door Models, Features A Specially Designed Stainless Steel Outlaw Series Muffler And Dual 2. 50 Inch Mandrel Bent Tailpipes. The System Finishes With 4. 00 Inch Black Ceramic Coated Stainless Steel Tips And Is Manufactured With 409S Stainless Steel. Designed For An Easy Fit, This System Includes All Necessary Parts And Hardware For Installation.