Flowmaster
Flowmaster 86-04 Mustang 4.6L/5.0L American Thunder Exhaust Cat-Back System
Why this price?
$584.95 is MSRP, the lowest price Flowmaster lets us list it at. Additionally, Pro members get $64.34 back on this part.
$584.95 − $64.34 = $520.61
Special Order
This part is still available to order. Once you place your order, we’ll submit it directly to Flowmaster, and they’ll ship it straight to you.
Delivery times can vary depending on the brand, so we can’t guarantee an exact arrival date. What we can guarantee is that we’ll stay on top of your order, monitor its progress, and keep you updated until it reaches your door.
Special-order items are typically not kept in stock by most retailers. By ordering through us, your order is placed directly with Flowmaster, assuring you get the part as quickly as possible.
Want to get an estimated delivery timeframe before ordering? Contact us through our contact page, and we’ll be happy to find out for you.
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
Flowmaster's race-inspired American Thunder® Extreme Cat-back system is designed to mount behind the factory catalytic converters, or most original style aftermarket H-pipes. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions. These systems are mandrel bent for maximum performance and include Super 44 series mufflers. This American Thunder Extreme system delivers a super aggressive interior and exterior tone and is suited to the enthusiast who wants the most aggressive components they can purchase. Like all Flowmaster systems, the benefits include improved throttle response and power. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Notes: Fits coupes and convertibles
- Fits with most modified suspensions
- Stainless Steel Construction
- Lifetime limited warranty
- Delta Flow Technology
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1986-2004 | Ford | Mustang | GT |
| 2001 | Ford | Mustang | GT Bullitt |
| 1995 | Ford | Mustang | GTS |
| 1986-1993 | Ford | Mustang | LX |
| 2003-2004 | Ford | Mustang | Mach 1 |
| 1993-1999,2001,2003-2004 | Ford | Mustang | SVT Cobra |
| 2003 | Ford | Mustang | SVT Cobra 10th Anniversary |
| 1993 | Ford | Mustang | SVT Cobra R |
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