Flowmaster
Flowmaster 99-04 Mustang GT 4.6L American Thunder SS Cat-Back Exhaust System
Why this price?
$1,049.95 is MSRP, the lowest price Flowmaster lets us list it at. Additionally, Pro members get $115.49 back on this part.
$1,049.95 − $115.49 = $934.46
Not sure it fits? Read our tips.
Fitment tips
Fitment can come down to more than year, make and model. Sometimes the sub-model decides, so start with the fitment table below.
- Drive type. If your car is all-wheel drive, make sure the part is for all-wheel drive, not rear-wheel drive.
- Engine size. For engine parts, make sure the engine size on the product matches your engine.
- Transmission. Manual and automatic cars often take different parts.
- Body style. Sedan or hatch, two-door or four-door, cab and bed length on trucks.
Manufacturer data can sometimes have imperfections. Still not sure? We are happy to help.
Send us a message and we will confirm the fit.
Couldn't load pickup availability
For the person who is looking for a complete Flowmaster® cat-back dual exhaust system with an aggressive tone. With easy fit in mind, this American Thunder® exhaust system features mandrel-bent 2.50-inch stainless steel tubing for maximum performance and includes a pair of specially selected Super 40® Series performance mufflers. The custom tailpipes feature added clearance and exit in the factory location with large 3.00-inch polished tips. The system uses the factory hanger locations for an easy install and delivers a moderate to aggressive interior and exterior tone, best suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage and are designed for an easy fit. The system includes all necessary parts, hardware and instructions for an easy installation you can do at home.
- Includes Hangers and Hardware for an Easy Installation
- Mandrel-bent 16 Gauge Stainless Steel Tubing
- 3.00-inch Polished 304 Stainless Steel Tips
- Super 40 Series Performance Mufflers
- Dyno Tuned for Maximum Performance
- Uses the Factory Hanger Locations
- Moderate Exterior Exhaust Tone
- Lifetime Limited Warranty
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1999-2004 | Ford | Mustang | GT |
| 2001 | Ford | Mustang | GT Bullitt |
| 2003-2004 | Ford | Mustang | Mach 1 |
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