Flowmaster Cat-Back Exhaust System American Thunder 2-1/2" Dual Exit With 4" Tips Jeep Wrangler JL 3.6L 2018-2021



  • Proudly Made in the USA!
  • Fits 3.6L Engines
  • Includes Hardware
  • Bolt-On Installation
MSRP $842.00
You save 10%

Flowmaster Dual Exit 2-1/2" American Thunder Cat-Back Exhaust System with 4" Tips for 2018, 2019, 2020 and 2021 Jeep JL Wranglers with a 3.6L Engine.

Set your 2018-2021 Jeep Wrangler JL before they even see it with this aggressive 2.5" Dual Exit American Thunder Cat Back Exhaust System with 4" Tips from Flowmaster. Designed for your JL with simple bolt-on installation, this Dual Out Rear emissions-legal system will provide the sound you want while helping boost your performance. Flowmaster manufactures this system in the USA.

Features and Benefits:
- Stainless Steel Construction
- Black Finish
- Black Ceramic Coated 4" Tips
- Dual 2-1/2" Mandrel Bent Tailpipes
- 2-1/2" Mandrel Bent Inlet Pipes
- Stainless Steel 80 Series Cross-Flow Muffler
- Moderate to Aggressive Exterior Performance Tone
- Minimal Interior Resonance
- Manufactured in the USA
- Bolt-On Installation
- Fits 2018-2020 Jeep JL Wranglers

The American Thunder cat back exhaust system is made from high quality stainless steel finished in a durable black coat for added modern styling. It comes with 4-inch tips that are black ceramic coated. The system features dual 2.5" mandrel bent tailpipes, an 80 series cross-flow muffler and 2.5" mandrel bent inlet pipes. Made to perfectly fit your 2-door or 4-door Wrangler JL, this cat-back exhaust (P/N: 817819) produces a satisfying moderate to aggressive sound that will set you apart on the trails and the highway but won't wake up your neighbors. The internal exhaust tone is minimal for you and your passengers' comfort. All of the necessary hardware and parts are included.

Please Note: This Flowmaster American Thunder cat back exhaust system can be installed on both 2 and 4 door Wrangler JLs. For installation on a 2 door Wrangler JL, it will require you to cut 21.5 inches off of the back of the front exhaust pipe.

California Residents: Proposition 65 Warning

Installation Difficulty


Intermediate skill is required for this installation.

Vehicle Fitment

This product will fit the following Wrangler years:

Only registered users can ask/answer questions. Please sign in or create an account.
Write Your Own Review
Only registered users can write reviews. Please sign in or create an account.