This aggressive sounding system is designed to replace the original rear mounted mufflers located behind the rear axle. With easy fit in mind, the system is mandrel bent for maximum performance and includes specially selected mufflers to support the performance image of the car. As an America Thunder system, it delivers an aggressive exterior tone with moderate interior sound level that is 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, the system includes all necessary parts and hardware for easy installation.
Features:
- Mandrel Bent 16ga Aluminized Tubing
- Moderate Exterior Exhaust Tone
- Mild Exterior Exhaust Tone
- Incl. Hangers and Hardware For Easy Installation
- Connects After Factory Catalytic Converter
- Dual Out Rear Exit
- Dyno Tuned for Maximum Performance
- Premium Flowmaster Quality
Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
Installation Notes:
Fits 2005-2009 Ford Mustang with V6 engine, coupes and convertible models.

About Flowmaster
Manufacturer of performance exhaust systems, mufflers, performance 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. Since 1983, Flowmaster is the company you can trust, and has led the industry in offering only the best products you can buy for your vehicles.

Vehicle Fitment:
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make |
Model |
Submodel |
Years |
Engine |
Fitment Notes |
Ford |
Mustang |
Base |
2005 |
4.0L / 245 / V6 |
Single; Single Side Exit; 2.5 in. Outlet; 5x10 in. Muffler Assembly; 3.5 in. Rolled Edge Stainless Tip;50 State Legal / California Emissions Compliant |
Ford |
Mustang |
Base |
2006 |
4.0L / 245 / V6 |
Single; Single Side Exit; 2.5 in. Outlet; 5x10 in. Muffler Assembly; 3.5 in. Rolled Edge Stainless Tip;50 State Legal / California Emissions Compliant |
Ford |
Mustang |
Base |
2007 |
4.0L / 245 / V6 |
Single; Single Side Exit; 2.5 in. Outlet; 5x10 in. Muffler Assembly; 3.5 in. Rolled Edge Stainless Tip;50 State Legal / California Emissions Compliant |
Ford |
Mustang |
Base |
2008 |
4.0L / 245 / V6 |
Single; Single Side Exit; 2.5 in. Outlet; 5x10 in. Muffler Assembly; 3.5 in. Rolled Edge Stainless Tip;50 State Legal / California Emissions Compliant |
Ford |
Mustang |
Base |
2009 |
4.0L / 245 / V6 |
Single; Single Side Exit; 2.5 in. Outlet; 5x10 in. Muffler Assembly; 3.5 in. Rolled Edge Stainless Tip;50 State Legal / California Emissions Compliant |