Flowmaster American Thunder Cat-Back Exhaust System

2020–2025 Jeep Gladiator 3.6L

817913

Overview:

The Flowmaster American Thunder Cat-Back Exhaust System is engineered specifically for the 2020 to 2025 Jeep Gladiator equipped with the 3.6L engine. Designed to enhance both the performance and sound of your Gladiator, this exhaust system delivers a deep, aggressive tone that stands out without overwhelming the cabin. Ideal for Jeep enthusiasts seeking a muscular exhaust note combined with durable construction and a sleek appearance, the American Thunder system offers a perfect balance of style and function.

Whether you’re upgrading for improved exhaust flow, a more commanding sound, or simply to add a custom look to your Gladiator, this cat-back system is a direct-fit solution that enhances your truck’s presence on and off the road.

Key Features:

Flowmaster’s American Thunder Cat-Back Exhaust System incorporates advanced design elements and quality materials to deliver reliable performance and a distinctive sound signature. Key features include:

• Mandrel-bent 3.00-inch inlet tubing for optimized exhaust flow and minimal restriction
• Super 44™ Series muffler engineered to produce a deep, moderately aggressive exterior sound with a balanced interior tone
• Dual 2.50-inch mandrel-bent tailpipes routed to clear the factory spare tire and exit behind the rear wheels
• Polished 3.50-inch 304 stainless steel tips embossed with the Flowmaster® logo for a premium finish
• Direct bolt-on fitment using factory hanger locations for straightforward installation
• Constructed from durable 409 stainless steel for corrosion resistance and long-lasting performance
• Designed specifically for Jeep Gladiator 3.6L models from 2020 through 2025
• Includes all necessary hardware and detailed instructions for a hassle-free installation
• Backed by Flowmaster’s Lifetime Limited Warranty for peace of mind

Construction & Design:

This exhaust system is crafted from high-quality 409 stainless steel, providing excellent resistance to rust and corrosion while maintaining structural integrity under demanding conditions. The mandrel-bent tubing ensures smooth, unrestricted exhaust flow, which helps improve engine efficiency and throttle response. The Super 44™ Series muffler is designed to balance sound and performance, delivering a deep, aggressive tone without excessive drone inside the cabin.

The dual tailpipes are carefully routed to clear the factory spare tire, exiting neatly behind the rear wheels to maintain the Gladiator’s rugged aesthetic. The polished 304 stainless steel tips add a refined touch, featuring the iconic Flowmaster logo for added style and brand recognition.

Performance & Sound

The American Thunder Cat-Back Exhaust System enhances your Jeep Gladiator’s exhaust note with a deep, moderately aggressive sound that commands attention. The Super 44™ muffler design provides a rich exterior tone that is aggressive yet refined, while maintaining a moderate interior sound level to ensure comfortable driving. This system improves exhaust flow, which can contribute to better engine efficiency and throttle response, making it a practical upgrade for both daily driving and spirited off-road adventures.

Installation & Fitment:

Designed as a direct bolt-on replacement, this cat-back exhaust system installs easily using the factory hanger locations without the need for cutting or welding. The included hardware and detailed instructions make it possible for enthusiasts to complete the installation at home with basic tools. The system fits all 2020 through 2025 Jeep Gladiator models equipped with the 3.6L engine, ensuring a perfect fit and reliable performance.

What's Included:

• Mandrel-bent 3.00-inch inlet tubing
• Super 44™ Series muffler
• Dual 2.50-inch mandrel-bent tailpipes
• Pair of 3.50-inch polished 304 stainless steel exhaust tips with Flowmaster logo
• All necessary mounting hardware
• Detailed installation instructions

Ideal For:

This exhaust system is ideal for Jeep Gladiator owners who want to upgrade their truck’s exhaust sound and appearance without compromising daily drivability. It suits enthusiasts looking for a durable, high-quality exhaust that delivers a commanding tone and improved exhaust flow, whether for street driving, weekend adventures, or light off-road use. The American Thunder system is perfect for those who appreciate a balance of aggressive sound and refined craftsmanship.

Flowmaster is an iconic exhaust brand famous for signature exhaust tone and performance mufflers, as well as complete axle-back and cat-back systems. Built for muscle cars, trucks, and performance builds, Flowmaster systems are designed to improve flow and deliver the sound character enthusiasts chase.