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 serious enthusiast who is looking for all the performance benefits of a complete Cat-back dual exhaust system, this is it. As an American Thunder system, it delivers an aggressive exterior sound level and a moderate interior tone that is suited to the enthusiast who wants to be heard. With maximum performance and easy fit in mind, the system is mandrel bent and includes specially engineered mufflers featuring Delta Flow technology. 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 a simple installation.
- Connects After Factory Catalytic Converter.
Cat-back System 409S - Dual Rear Exit - American Thunder - Aggressive Sound.
Installation Notes:
Fits 2005 to 2010 Ford Mustang GT and GT500 and California Special and Convertible with a 4.6L or 5.4L engine. Professional installation by a licensed mechanic required.
Fitment & Application:
Brand | Flowmaster |
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Part Number | FLO-817494 |
Shipping Method | UPS/FedEx/USPS Ground |
Availability | Normally ships in ~1-2 business days. |
California Prop 65 Warning | 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 |