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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 3 in. systems generally deliver an aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The sound level will depend greatly on the engine and level of modification. 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.
|Exhaust Series||American Thunder|
|Exit Position||Dual Side|
|Heat Shield Attached||No|
|Inlet Diameter||3.000 in.|
|Inlet Inside Diameter||3.000 in.|
|Muffler Series||Super 40 Series|
|Outlet Diameter||3.000 in.|
|Outlet Outside Diameter||3.000 in.|
|System Type||Header Back|
|Tail Pipe Diameter||3.000 in.|
|Tip Diameter||3.000 in.|
|Title||Flowmaster 817202 Header-back System 409S - Dual Side Exit - American Thunder - Aggressive Sound|
|Tubing Diameter||3.000 in.|
*Some manufacturer restrictions apply.
Manufacturer of performance exhaust systems, mufflers, cold air intakes, turbo boost modules, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices with 12 designs of chambered mufflers, 3 styles of our exclusive “laminar-flow” mufflers and a new line of FlowFX “straight-through” performance mufflers, along with 5 sound categories of exhaust systems, giving you the customer, the power to custom tailor the sound of your vehicle whether you prefer mild, moderate or aggressive tones and sound levels.
Based in California with 3 warehouses across the country, we’re sending out shipments everyday of the week, even Saturdays. Because your next mod shouldn’t have to wait.
The best modders use Wheelwell to build their dream rides.