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2013-2014 Shelby GT500 Cat Back Exhaust

The 2013-2014 Shelby GT500 Mustang exhaust is nice from the factory, but still traps a lot of horsepower.  Vehicle owners can see significant results with simple upgrades, or larger results with a complete system replacement.  JMS has tested and used a wide variety of assemblies and combination of parts.  As a result, we have documented a host of mixed and matched components, and logged a considerable amount of dyno hours.


Axle-back and cat-back exhaust systems are probably the most common and first upgrades a 2013-2014 Shelby GT500 owner will perform.  These packages provide and aggressive sound and produce a worthy increase in horsepower, while also adding a nice personalized touch.  When considering these products, we hghly recommend you use stainless steel tubing and mufflers for long life and reliability.  Depending upon the brand you choose, computer ECU custom tuning may be a strong consideration to maximize the benefits of the upgrade.