Flowmaster American Thunder Axle-Back Exhaust System

2018–2026 Jeep Wrangler JL 2.0L Turbo & 3.6L Engine

817837

Overview:

The Flowmaster American Thunder Axle-back Exhaust System is engineered specifically for the 2018 to 2026 Jeep Wrangler JL models equipped with either the 2.0L Turbo or 3.6L engine. Designed for both 2-door and 4-door configurations, this axle-back system offers Jeep enthusiasts a perfect balance of enhanced performance, improved ground clearance, and a refined exhaust tone. By replacing the factory transverse muffler, it reduces weight and elevates the tailpipe for better off-road clearance, making it an excellent upgrade for drivers seeking a more aggressive yet moderate exhaust sound without overwhelming noise.

This system is ideal for Jeep owners who want to maintain daily drivability while enjoying a noticeable improvement in exhaust flow and vehicle dynamics. Its design ensures a seamless fit and straightforward installation, allowing you to upgrade your Wrangler’s exhaust in about 15 minutes at home.

Key Features:

The Flowmaster American Thunder Axle-back exhaust system combines quality materials and thoughtful engineering to deliver reliable performance and style. Key features include:

• Direct fit for 2018–2026 Jeep Wrangler JL models with 2.0L Turbo or 3.6L engines
• Compatible with both 2-door and 4-door Wrangler configurations
• Mandrel bent 2.50-inch 409 stainless steel tailpipe for optimal exhaust flow
• 3.00-inch polished 304 stainless steel exhaust tip for a sleek, durable finish
• Replaces factory transverse muffler to reduce weight and improve ground clearance
• Moderate exhaust tone that enhances sound without being excessively loud
• High-mounted tailpipe design to protect against off-road obstacles
• Includes all necessary hardware for quick and easy installation
• Covered by Flowmaster’s Lifetime Limited Warranty for peace of mind

Construction & Design:

Built with durability and performance in mind, the American Thunder axle-back system features a mandrel bent 409 stainless steel tailpipe that ensures smooth exhaust flow and resistance to corrosion. The tailpipe is finished with a polished 304 stainless steel tip, providing a premium look that complements the rugged styling of the Jeep Wrangler. The high-mounted design not only improves ground clearance but also protects the exhaust from damage during off-road excursions. Flowmaster’s precision engineering guarantees a perfect fit that integrates seamlessly with the factory exhaust system.

Performance & Sound

This axle-back exhaust system enhances your Jeep Wrangler’s performance by reducing backpressure and weight compared to the factory muffler setup. The result is a more responsive throttle feel and improved exhaust flow. The sound profile is tuned to deliver a moderate, aggressive tone that adds character without being intrusive or offensive. This makes it suitable for daily driving and off-road adventures alike, providing an enjoyable auditory experience that complements the Wrangler’s rugged personality.

Installation & Fitment:

The Flowmaster American Thunder Axle-back exhaust system is designed for a straightforward, bolt-on installation that can typically be completed in about 15 minutes using basic hand tools. It fits directly onto the factory exhaust hangers and requires no cutting or welding. Because the system positions the tailpipe higher than stock, it is recommended to pair it with an aftermarket metal bumper for optimal clearance and protection during off-road use. This system fits all 2018–2026 Jeep Wrangler JL models equipped with the 2.0L Turbo or 3.6L engine, including both 2-door and 4-door variants.

What’s Included

• Mandrel bent 2.50-inch 409 stainless steel tailpipe
• 3.00-inch polished 304 stainless steel exhaust tip
• All necessary mounting hardware and clamps
• Installation instructions

Ideal For:

This exhaust system is perfect for Jeep Wrangler owners who want to improve their vehicle’s performance and sound without sacrificing ground clearance or daily drivability. It suits off-road enthusiasts who require a durable, high-clearance exhaust setup, as well as street drivers looking for a moderate, refined exhaust tone. If you value quality construction, easy installation, and a balanced exhaust note, the Flowmaster American Thunder Axle-back is an excellent choice for your 2018–2026 Jeep Wrangler JL.

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.