The Ford Mustang Exhaust Extreme Performance Kit gives your Mustang that rumble sound letting other's know you mean business while increasing the horsepower and torque of your vehicle. The increased power is generated due to the higher flow system as compared to a conventional exhaust system. Though this particular exhaust for the Ford Mustang creates more sound outside your car, it doesn't create the typical off-road exhaust drone inside. The exhaust system is manufactured using a CNC bender to create smooth mandrel bends. This process maintains a consistent inside diameter through the bended area and allows for a significant increase in flow over stock/serrated-bent pipes. This Ford Mustang exhaust kit is made from high-quality 2.5-inch diameter stainless steel tubing and has 4-inch diameter tips made from polished 304 stainless steel and embossed with the "ROUSH" logo. Fits 2005 - 2009 Mustang GTs and GT500s with factory rear fascia.
A cat-back or similar exhaust system replaces the exhaust piping from a set point, such as the catalytic converter or filter, back to the outlet, routing exhaust gas out from under the vehicle.
Listed for 1 vehicle: the fitment table on this page shows each year, make and model it fits.
Part number: 403936
Roush 2005-2009 Ford Mustang GT/GT500 Enhanced Sound Dual Cat-Back Exhaust Kit
- Canadian company, prices in CAD
- Shipping and duties shown before you pay, no surprises at the door
- 30 day returns from delivery, see policy
Vehicle fitment
Estimated fitment — verify before purchase| Years | Make | Model |
|---|---|---|
| 2005–2009 | Ford | Mustang |
Specifications
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | Roush |
| Part number | RSH403936 |
| Category | Exhaust & Performance |
Customer reviews

Worth adding
Useful in any truck — ships separately in its own box.
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