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For the person who wants a subtle custom appearance with all the benefits that a Flowmaster Cat-back exhaust system provides. S.O.S. (Single out side) systems are the perfect choice. Force II systems deliver a moderate exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.
Mandrel bent 16 Gauge Tubing
Dyno tuned for maximum performance
Includes hangers and hardware for easy installation
Stock to mild exterior exhaust tone
Fits 2004 to 2008 Ford F-150 and Lincoln Mark LT trucks with a 4.6L or 5.4L engine, fits 2 and 4 wheel drive models and all wheelbases.
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.