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 is looking for a complete Cat-back dual exhaust system with an aggressive tone. 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.
Cat-back System 409S-Dual Rear/Side Exit- American Thunder - Moderate/Aggressive.
Fits 1999 to 2006 Chevrolet Silverado 1500 and GMC Sierra 1500 with a 4.8L or 5.3L V8 engine, fits Standard Cab and short bed model. Professional installation by a licensed mechanic required.
With Flanged Catalytic Converter. Standard cab/Short bed only.
| Brand | Flowmaster |
|---|---|
| Part Number | FLO-817435 |
| Shipping Method | UPS/FedEx/USPS Ground |
| Availability | Normally ships in ~1-2 business days. |
| 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