The S197 body style combined with the updated power levels of the new three-valve version of the 4.6L Modular V8 made the 2005 to 2009 Mustangs one of the best investments a performance enthusiast could make. The massive popularity of these Mustangs caused an explosion of performance parts and accessories to flood the aftermarket, and Stage 3 Motorsports carries a huge selection of them.

We have everything you need to turn your 2005 to 2009 GT into a real road-going monster, including Mustang Cold Air Intakes, Mustang Exhaust Kits, Mustang Wheels, Mustang Tuners, Mustang Suspension Kits, Mustang Headers and much more for your 2005 to 2009 Mustang GT.

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View Mustang GT Production numbers or Mustang GT Specs. Do you know your mustang's Paint Code?

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The S197 body style combined with the updated power levels of the new three-valve version of the 4.6L Modular V8 made the 2005 to 2009 Mustangs one of the best investments a performance enthusiast could make. The massive popularity of these Mustangs caused an explosion of performance pa...

Upgrading your 2005-2009 Mustang GT is easy with the help of Stage 3 Motorsports. Your new Mustang GT will see huge power gains with a new cold air intake, performance tuning, and exhaust modifications.

2005-2009 Mustang GT Cold Air Intakes: Adding an intake is easy, the install takes about 1 hour and can be done with common tools. Once you add a cold air intake to your Mustang GT you may need a performance tune. If you are adding a tune, now if the time to add a BBK throttle body. Adding a cold air intake will also make you exhaust system louder.

2005-2009 Mustang GT Exhaust Upgrades: The stock GT exhaust system is far to quiet. We suggest adding at least an axle back exhaust. We see a lot of mustang GT customers really enjoying the sound of the magnaflow axle back. If you are looking for big power, add a set of long tube headers and high flow cats.