Flowmaster American Thunder Header-Back Exhaust SystemBe the first to review this product
- Dual exhaust system
- Mandrel bent tubing
- Tested and proven dyno tune
- Full bolt-on fitment
- Made with tough steel
- Made in the USA
- Excellent performance exhaust system with mild interior tone and aggressive exterior tone
- Mandrel bent tubing for easy and unrestricted air flow
- Tested and proven dyno tune for excellent performance
- Choose between stainless steel and aluminized steel
- Easy no-drill installation for most models
- Made with tough steel to stay strong and last long
- Manufacturer's guarantee of superior crafting and excellent quality
- Made in the USA in an economy-building industry
Heavy-duty exhaust system
The Flowmaster American Thunder header-back is a complete dual exhaust system. It gives your vehicle a smooth exhaust flow with an aggressive exterior tone. It is designed to perform and give you the ultimate driving experience.
Unrestricted air flow
It features a mandrel-bent tubing that allows easy and unrestricted airflow. This ensures a smooth exhaust flow, reduced internal resonance and a mild interior tone for an enjoyable driving experience.
The system is dyno tuned for optimal performance with reduced flow restrictions and internal resonance. This means that you get the best out of it without sacrificing a quiet and enjoyable drive.
Stainless steel or aluminized steel
The Flowmaster American Thunder header-back exhaust system is available in stainless steel and aluminized steel.
Full bolt-on fitment
The exhaust system comes with a full bolt-on fitment with factory mounting points for an easy installation. It also comes with all installation hardware and a detailed manual. For the best fitment, let a professional do the installation.
Made strong to last long
The components are made with tough steel. Expert engineers weld and process them with advanced technology to make sure that you get the value for your money. The exhaust system is virtually indestructible.
Manufacturer's guarantee of quality
Flowmaster provides a limited lifetime warranty for every purchase of the stainless steel exhaust system. The aluminized steel system comes with a three-year warranty. It is an assurance of superior quality and excellent performance.
Proudly made in the USA
The Flowmaster American Thunder header back exhaust system is proudly made in the USA with local labor and materials. The company employs thousands of American professionals every year and makes its contribution to the growth of the economy.
Lifetime Limited Warranty applies to Flowmaster all stainless steel exhaust systems.
Three (3) Year Limited Warranty applies to Flowmaster aluminized steel exhaust systems.
Apollo, Gran Sport, GS, GS 350, GS 400, GS 455, Skylark, Special
Bel Air, C10 Pickup, C20, C20 Pickup, Camaro, Chevelle, Chevy II, El Camino, Malibu, Monte Carlo, Nova, One-Fifty Series, R20, Two-Ten Series
Charger, Coronet, Dart
C15/C1500 Pickup, C25, C25/C2500 Pickup, C2500, Sprint
442, Cutlass, Cutlass Supreme, F85, Omega, Vista Cruiser
Belvedere, Duster, GTX, Road Runner, Satellite, Scamp, Valiant
Firebird, Grand Prix, GTO, LeMans, Tempest, Ventura