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7 am – 5 pm PST
SAT – SUN
For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat-back exhaust system provides. D.O.S. (Dual out side) systems are the perfect choice. American Thunder systems deliver a moderate to aggressive interior and exterior tone along with improved throttle response, power and mileage. Includes all necessary parts and hardware for easy installation.
Dyno tuned for maximum performance
Moderate Sound exterior exhaust tone
Includes hangers and hardware for easy installation
Mandrel bent 16 Gauge Tubing
Fits 2004 to 2006 Chevrolet Tahoe and GMC Yukon with a 4.8L or 5.3L engine, fits 2 and 4 wheel drive. Does Not Fit Z-71.
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.