Flowmaster Header-Back Exhaust System 409S - Dual Rear Exit-AmeriCan Thunder - Aggressive Sound - 3" Tailpipe RS00500306 Master Rebuild Kit

Master Rebuild Kit

lid gasket

Large inlet and outlet pipes with low back pressure six-sided louvered core mufflers

Standard 5/8 in Rod Ends

Flowmaster Header-Back Exhaust System 409S - Dual Rear Exit-AmeriCan Thunder - Aggressive Sound - 3" Tailpipe RS00500306 Master Rebuild KitHeader back System 409S Dual Rear Exit American Thunder(R) Aggressive Sound Fits 1968 to 1972 GM A Body with a V8 engine. For the person who is looking for a complete Header back dual exhaust system with an aggressive tone. This system is mandrel bent for maximum performance and includes specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their