Flowmaster American Thunder Crossmember-Back Exhaust System

1968–1970 Dodge Charger V8

17382

Overview:

The Flowmaster American Thunder Crossmember-Back Exhaust System is engineered specifically for the 1968 to 1970 Dodge Charger equipped with a V8 engine. Designed for muscle car enthusiasts seeking a perfect balance of aggressive sound and improved performance, this true dual exhaust system delivers a commanding presence both visually and audibly. It enhances your classic Mopar B-Body’s exhaust flow while maintaining a moderate interior tone, making it ideal for street-driven vehicles that demand performance without excessive noise.

Built to replace the factory crossmember-back exhaust, this system offers a significant upgrade in throttle response, power delivery, and fuel efficiency. Whether you’re restoring a classic Charger or upgrading your existing setup, the American Thunder system provides a durable, high-quality solution that complements the iconic muscle car experience.

Key Features:

This Flowmaster exhaust system combines advanced design with proven technology to deliver superior performance and sound characteristics. Key features include:

• True dual exhaust configuration for balanced flow and sound
• 3.00-inch mandrel-bent aluminized steel tubing for maximum flow and durability
• Integrated H-pipe crossover assembly to enhance scavenging and reduce drone
• Flowmaster Super 40 Series performance mufflers for a moderately aggressive exterior tone
• Dual 3.00-inch mandrel-bent tailpipes exiting straight out the back under the rear bumper
• Hardware and all necessary parts included for a complete installation
• Does not include exhaust tips, allowing customization to your preference
• Improves throttle response, horsepower, and fuel mileage
• Covered by Flowmaster’s 3-year Limited Warranty for peace of mind

Construction & Design:

The American Thunder system is constructed from high-quality aluminized steel tubing, which offers excellent corrosion resistance and long-lasting durability. The 3.00-inch mandrel-bent pipes ensure smooth exhaust flow with minimal restrictions, preserving engine output and efficiency. The built-in H-pipe crossover is expertly engineered to balance exhaust pulses between the two banks of cylinders, reducing unwanted drone and enhancing overall sound quality.

The Super 40 Series mufflers are designed to provide a distinctive, moderately aggressive exhaust note that is both muscular and refined. The dual tailpipes are mandrel-bent for a clean, straight exit beneath the rear bumper, contributing to the Charger’s classic aggressive stance without the need for additional modifications.

Performance & Sound

This exhaust system is tuned to deliver a powerful yet controlled sound signature. The moderately aggressive exterior tone announces your presence on the road without overwhelming the cabin, making it suitable for daily driving and spirited cruising alike. The improved exhaust flow enhances throttle response and can contribute to noticeable gains in horsepower and fuel efficiency, allowing your classic Dodge Charger to perform as impressively as it looks.

Installation & Fitment:

Designed as a direct bolt-on replacement for the 1968–1970 Dodge Charger with V8 engines, the Flowmaster American Thunder Crossmember-Back Exhaust System installs easily using the included hardware and detailed instructions. No cutting or welding is required, making it a straightforward upgrade for experienced enthusiasts and professional installers alike. The system fits Mopar B-Body chassis perfectly, ensuring proper clearance and alignment with factory mounting points.

What's Included:

• 3.00-inch mandrel-bent aluminized steel tubing
• Built-in H-pipe crossover assembly
• Pair of Flowmaster Super 40 Series performance mufflers
• Dual 3.00-inch mandrel-bent tailpipes
• All necessary mounting hardware and clamps
• Comprehensive installation instructions

Ideal For:

This exhaust system is ideal for Dodge Charger owners who want to enhance their vehicle’s performance and sound without sacrificing drivability or comfort. It suits classic muscle car restorations, weekend cruisers, and street performance builds that demand authentic American muscle car tone and improved exhaust efficiency. If you prefer a customizable look, the omission of exhaust tips allows you to select your own style or run the pipes raw for a bold, muscular appearance.

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.