Flowmaster American Thunder Cat-Back Exhaust System: Jeep Wrangler 2018-2026

Flowmaster American Thunder Cat-Back Exhaust System

2018–2026 Jeep Wrangler JL 3.6L

817819

Overview:

The Flowmaster American Thunder Cat-Back Exhaust System is engineered specifically for the 2018 to 2026 Jeep Wrangler JL models equipped with the 3.6L engine. Designed for Jeep enthusiasts seeking a balance between aggressive exterior sound and a mild interior tone, this system delivers the signature Flowmaster performance and quality. It enhances your Wrangler’s exhaust flow, providing improved throttle response and a distinctive exhaust note without overwhelming cabin noise.

This bolt-on system is ideal for drivers who want to upgrade their Jeep’s exhaust for both style and function, offering a perfect blend of sound, durability, and ease of installation.

Key Features:

Built to elevate your Jeep Wrangler’s performance and sound, the American Thunder Cat-Back Exhaust System includes:

• Precision 2.50-inch mandrel bent stainless steel inlet pipe for optimal exhaust flow
• Specially designed stainless steel resonator to minimize interior resonance and drone
• Durable stainless steel 80 Series™ cross-flow muffler for balanced sound and performance
• Dual 2.50-inch mandrel bent tailpipes for enhanced exhaust scavenging
• Large dual 4.00-inch black ceramic coated stainless steel tips for a stealthy, modern appearance
• Emissions-legal design ensuring compliance with regulations
• Complete bolt-on installation with all necessary hardware included
• Engineered specifically for Jeep Wrangler JL 2 and 4-door models with the 3.6L engine

Construction & Design:

The Flowmaster American Thunder system is crafted from high-quality stainless steel to resist corrosion and withstand harsh off-road conditions. The mandrel bent piping ensures smooth exhaust flow without restrictions, while the 80 Series™ cross-flow muffler is designed to provide a deep, aggressive tone without excessive interior noise. The black ceramic coated tips not only add a refined aesthetic but also provide additional protection against heat and wear.

Every component is engineered for a precise fit, ensuring durability and longevity while maintaining the rugged style Jeep owners expect.

Performance & Sound

This cat-back exhaust system enhances your Jeep Wrangler’s performance by improving exhaust flow, which can lead to better throttle response and a more engaging driving experience. The sound profile ranges from moderate to aggressive, delivering a bold exterior exhaust note that commands attention while keeping interior noise comfortable for daily driving. The integrated resonator effectively reduces drone, making it suitable for both spirited drives and long road trips.

Installation & Fitment:

The Flowmaster American Thunder Cat-Back Exhaust System is designed for a straightforward bolt-on installation with no cutting or welding required. It fits 2018 through 2026 Jeep Wrangler JL 2-door and 4-door models equipped with the 3.6L engine. All necessary hardware and instructions are included, allowing enthusiasts to install the system at home with basic tools and mechanical knowledge.

What's Included:

• 2.50-inch mandrel bent stainless steel inlet pipe
• Stainless steel resonator
• Stainless steel 80 Series™ cross-flow muffler
• Dual 2.50-inch mandrel bent tailpipes
• Dual 4.00-inch black ceramic coated stainless steel exhaust tips
• All mounting hardware and installation instructions

Ideal For:

This exhaust system is perfect for Jeep Wrangler JL owners who want to upgrade their vehicle’s sound and performance without sacrificing daily drivability. It suits off-road enthusiasts, weekend adventurers, and anyone looking to add a bold yet refined exhaust tone to their 3.6L Wrangler. The system’s emissions-legal design also makes it a practical choice for street-driven vehicles.