With thirty-five years of experience, Flowmaster has specialized in automotive science and various patent protecting technologies. Ushering a new standard, the brand has shown a revolutionary development in the past few decades. The brand has an aim to design the best automotive products, delivering high-end performance. The highest quality of exhaust products, advanced manufacturing techniques and unwavering dedication toward customers are what set this brand apart from others. Flowmaster Performance has embraced innovative technologies to improve its product line. From its FlowFx straight-through design to legendry chambered, every product delivers outstanding performance.
For the person who wants the aggressive look of a NASCAR race truck along with all the benefits that a Flowmaster Cat-back exhaust system provides. D.O.S.S. (Dual out same side) systems are the perfect choice. 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.
Cat-back System 409S- Dual Same Side Exit - American Thunder - Aggressive Sound.
Fits 1999 to 2006 Chevrolet and GMC truck on a 1/2 Ton chassis with a 4.8L or 5.3L engine, fits 2 and 4 wheel drive models with and Extended Cab and short bed configuration on a 143.5 inch wheelbase. Professional installation by a licensed mechanic required.
Extended cab with a short bed only.
| Brand | Flowmaster |
|---|---|
| Part Number | FLO-817395 |
| Shipping Method | UPS/FedEx/USPS Ground |
| Availability | Possibly special-order. Call or email to check stock. |
| California Prop 65 Warning |
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 This product can expose you to chemicals including lead and chromium (hexavalent compounds) which are known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov