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2011-2012 Shelby GT500 Performance Power Packages

JMS was one of the first aftermarket tuners to start modifying the 2011 Shelby GT500 Mustang with the SVT 5.4L supercharged engine. We have built and tuned numerous high horsepower Shelby's ranging from 750 to over 1,000 RWHP, and we have used that knowledge to develop reliable horsepower packages using the same parts we install in our well documented and publicized mega-power GT500's.


Be Sure to watch our latest 750+rwhp Shelby Dyno Runs on the JMS YouTube Channel


JMS 2011-2012 Shelby GT500 Performance Power Packages are pre-engineered to be complete solutions for all types of drivers.  Our entry-level kits are easy to install and offer safe, reliable, and affordable performance you can count on every day while other JMS packages offer considerably more power.  Each JMS horsepower option uses only the components we endorse and use in our tech center, which means the customer gets the best technical support and proven results every time.