Flowmaster® 17202 - American Thunder™ Aluminized Steel Dual Header-Back Exhaust System (Dual Side Exit)

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Flowmaster® - American Thunder™ Aluminized Steel Header-Back Exhaust System (Dual Side Exit)
Flowmaster® - American Thunder™ Aluminized Steel Header-Back Exhaust System (Dual Side Exit)Flowmaster® - American Thunder™ Aluminized Steel Header-Back Exhaust System (Dual Side Exit)Flowmaster® - American Thunder™ Aluminized Steel Header-Back Exhaust System Installation InstructionsFlowmaster® - Exhaust TypesFlowmaster® - American Thunder™ Exhaust Systems Aggressive SoundFlowmaster® - Product Information and TechnologyFlowmaster Authorized Dealer
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flowmaster exhaust system

American Thunder™ Aluminized Steel Dual Header-Back Exhaust System (17202) by Flowmaster®. AGGRESSIVE SOUND. Super 40 Series Mufflers. Dual Side Exit. 3" Tubing. Without Tips. Includes H-Pipe. Without Heat Shield. American Thunder gives you the classic AGGRESSIVE, MODERATE or MILD sound (depends on application and exhaust type) of a Flowmaster chambered exhaust, which is the classic sound of classic American big performance engines. This is a system that gives the most sedate vehicle a performance rumble. American Thunder is perfect for a wide range of cars, from ponies to sleepers.



  • Moderate Sound
  • Increases Power
  • Increases Torque
  • Every System Tuned on Dynamometer
  • Perfect Fitment

American Thunder gives you exactly the sound that is promised by the name of the series. The exhaust sound of the American Thunder system has become a symbol of American power that is recognized all over the world. American Thunder is the most popular of the Flowmaster exhaust systems, enhancing power, torque, throttle response and mileage for automobile enthusiasts all over the world.

All Flowmaster exhaust systems give the same improvement of performance. All Flowmaster exhaust systems produce a beautiful deep performance tone. Choosing between the five different exhaust systems is not a technical decision – it is all up to your personal taste. It’s A Sound Decision™. The racing origin is evident in every Flowmaster exhaust system. All the five series of systems are tuned for maximum performance. They differ in technology and tuning, and thus in tone and character, giving you a performance engine sound to your personal liking.

Flowmaster exhaust systems employ two unique technologies, the patented Delta Flow and the Laminar Flow. They give different characters of sound and can be tuned to achieve the desired exhaust note. Flowmaster Exhaust System Technology is so versatile and gives such a high degree of control that it is used both by racers, who want maximum power, and by the U.S. Air Force in Stealth applications, where maximum silence and minimum heat emissions are prime considerations.

Be it for a domestic or import truck, SUV, off-road warrior, daily driver, muscle car, euro-spec cruiser or sport compact vehicle, Flowmaster technicians personally hand select the right muffler, tubing size, resonator, and tip to make the process easy for you. Best of all, Flowmaster stainless steel exhaust systems are covered by a Limited Lifetime Warranty; ensuring that your exhaust will last as long as you own your vehicle. If you choose aluminized steel products, Flowmaster backs them up with a 3-year warranty.

Flowmaster® has its roots in solving the engine noise problems encountered by California racers in the 1980s. In 1983 Flowmaster’s founder, Ray Flugger, created his first patented design of racing silencers, which dampened noise with minimal loss of power. Ray attached handles to ease carrying the square shaped race mufflers through the race pits, and the mufflers became known as the "suitcase mufflers." Today, the innovative Flowmaster mufflers are the result of years of development with top race engine builders, thousands of hours of dyno research and "real-world" on-track testing.

Part Number:

Vehicle Fitment

This part is compatible with 23 vehicle(s)
Year Make Model Fitment Notes:
1967 Buick Gran Sport
1967 Chevy Chevelle
  • SS 6.5L
1967 Chevy Chevelle
  • Concours / Deluxe 4.6L / 5.4L / 6.5L
1967 Chevy Chevelle
  • Base 3.8L / 4.6L / 6.5L
1967 Chevy Malibu
  • 4.6L / 6.5L
1967 Oldsmobile Cutlass
  • Base 5.4L
1967 Oldsmobile 442
1967 Pontiac GTO
1967 Pontiac LeMans
1966 Buick Gran Sport
  • 6.6L
1966 Chevy Chevelle
  • SS 6.5L
1966 Chevy Chevelle
  • Deluxe 4.6L
1966 Chevy Chevelle
  • Base 3.2L / 4.6L
1966 Chevy Malibu
  • 4.6L / 6.5L
1966 Oldsmobile Cutlass
  • Base
1966 Oldsmobile 442
1966 Pontiac GTO
1965 Buick Gran Sport
  • 6.6L
1965 Chevy Chevelle
  • Deluxe 4.6L / 5.4L
1965 Chevy Chevelle
  • Base 3.2L / 4.6L
1965 Chevy Chevelle
  • SS 4.6L / 6.5L
1965 Chevy Malibu
  • 3.2L / 4.6L
1965 Oldsmobile Cutlass
  • Base 5.4L / 6.6L
1965 Oldsmobile 442
1965 Pontiac GTO
1964 Chevy Chevelle
  • Base 4.6L
1964 Chevy Malibu
  • 4.6L
1964 Oldsmobile Cutlass
  • Base 5.4L
1964 Pontiac GTO
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Flowmaster® - American Thunder™ Aluminized Steel Header-Back Exhaust System (Dual Side Exit)Flowmaster® 17202 - American Thunder™ Aluminized...    $640.97
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