For the person who is looking for a complete Cat-back dual exhaust system with a moderate to aggressive sound level. With easy fit in mind, the system is mandrel bent for maximum performance and includes a specially selected Super 50 series muffler. American Thunder systems are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. The system includes all necessary parts and hardware for easy installation.