For the person who is looking for a complete Header-back dual exhaust system with an aggressive tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and 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. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.

• Mandrel bent 16 gauge aluminized tubing
• Moderate to aggressive exterior exhaust tone
• Includes hangers and hardware for easy installation
• Connects after factory catalytic converter
• Made in the USA
• Premium Flowmaster quality

Application:

• 1999-2006 CHEVROLET SILVERADO 1500 V8 4.8 Extended Cab Pickup 78.0in Bed Length 143.5in Wheelbase
• 1999-2006 CHEVROLET SILVERADO 1500 V8 5.3 Extended Cab Pickup 78.0in Bed Length
• 1999-2006 GMC SIERRA 1500 V8 4.8 Extended Cab Pickup 78.0in Bed Length 143.5in Wheelbase
• 1999-2006 GMC SIERRA 1500 V8 5.3 Extended Cab Pickup 78.0in Bed Length