Ford F-150 FX4 2009, American Thunder™ Stainless Steel Cat-Back Exhaust System by Flowmaster®, MODERATE SOUND. American Thunder gives you the classic AGGRESSIVE or MODERATE 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.
- Available sound levels: Aggressive Sound / Moderate Sound (depends on application and exhaust type
- 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.613.92 655.88
Brand: Flowmaster Part Numbers:
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.Product Reviews (2)
Every Customer can leave a review about our service and the product that was purchased. In order to leave your review for your new product, please follow the link in the email you receive after completing your purchase. You can rate appearance, ease of installation, price/value and product quality.Flowmaster® - American Thunder™ Cat-Back Exhaust SystemAverage Rating: 4.6 of 5APPEARANCEEASE OF INSTALLATIONPRICE/VALUEQUALITYAll Flowmaster Reviews(5)APPEARANCEEASE OF INSTALLATIONPRICE/VALUEQUALITY2010 Ford F-150 | Posted by Christopher | (Fremont, NE)
I purchased this exhaust system about two months ago and I have been extremely pleased ever since. The throttle response and torque have been both improved. I'm not sure about the fuel mileage due to the fact that I can't seem to stay out of throttle because the American Thunder just sounds awesome. The system fits perfectly. And the installation went absolutely beautifully. All the stock hangers line up perfectly with the Flowmaster ones. The instructions were spot on, right down to the exact number of inches to cut off one of the tubes to make it fit. If you're not a fan of a strong exhaust note, then this is not for you. Since it is a little loud in the cab during city driving. However that noise is subdued at highway speeds when the overdrive kicks in. I would highly recommend this to anyone who wants their truck to sound strong as hell, but not to those who want a more timid exhaust note.1 people found this review helpful.Was this review helpful for you? YesNoShare this review:(4.3)APPEARANCEEASE OF INSTALLATIONPRICE/VALUEQUALITY2011 Ford F-150 | Posted by Cory | (Fairbanks, AK)
Exhaust system sounds great and seemed like it opened up some low end torque. I would recommend this product to others. I installed mine on a 2011 F150 5.0 in about 1 1/2hrs. Very easy!6 people found this review helpful.Was this review helpful for you? YesNoShare this review:
Product Reviews (2)
Product Reviews (2)
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