2005-2009 Mustang GT Cat-Back Exhaust Kits
While more expensive and slightly more difficult to install than your typical Mustang axle-back exhaust kit, a cat-back exhaust system can get you even more sound and improved performance over a basic axle-back. Our large selection of Mustang cat-back exhausts come from the most famous names in the performance exhaust industry, like Flowmaster, Borla, Magnaflow, JBA, Pypes, and several others so that you know you're getting flawless quality on top of extra sound and power. Each of these cat-back exhaust systems replace everything aft of your Mustang's catalytic converters (though some do come with mid-pipes), including your kickover tubes, mufflers, and exhaust tips with larger and/or improved components that reduce back pressure and produce awesome new exhaust notes. The kits that come with a new mid-pipe can get you even more power and sound, but may require custom tuning to work properly. Once you have a cat-back exhaust kit picked out, make sure to take a look at the rest of our exhaust upgrades, performance intake parts, camshafts, suspension upgrades, or our exterior parts.Mustang>2005-2009 GT 4.6L
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$1,044.00
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$1,231.00
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$749.99
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$574.99
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$799.99
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$1,049.99
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Why you may want a Cat-Back Kit over an Axle-Back Kit
Branching off our axle-back conversation, there are a few reasons to choose a Mustang cat-back exhaust kit. Yes, they're more expensive. Yes, the install is a little bit more intensive. Yes, their power gains are a bit exaggerated. In the end a cat-back exhaust kit can really bring out the best in your 2005 to 2009 Mustang GT and can help open the door for more horsepower and torque down the road when combined with other performance parts.- Deeper Tone: With more tubing (and generally larger tubing than stock), a cat-back exhaust kit has a deeper, more rich sound than a similar axle-back kit and gives your Mustang a more old-school exhaust note.
- Reduced Back Pressure: Because a cat-back replaces your Mustang's kickover tubes (over-axle tubes, if you prefer) with larger and usually mandrel-bent tubing, there's a pretty significant drop in back pressure that does get you more power and better fuel economy. Granted, it's usually not anywhere near some of those advertised numbers, but gains can still be noticed and felt.
- More Power Potential: The biggest advantage of a cat-back exhaust kit over an axle-back is its ability to help your Mustang's other performance parts produce more power. While not all that great on its own, when you combine a cat-back exhaust kit with intake upgrades, performance packages, or superchargers, the cat-back will help your other upgrades make some extra power with its reduced back pressure and restrictions to get extra exhaust gasses out of your engine's cylinders more efficiently.
