2007-2012 Shelby GT500 Mustang 675 HP Performance Upgrade Kit

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 Shelby GT500 2007-2012 675 HP Performance Upgrade Parts

Free up some safe and reliable horsepower with our JDM 675 Horsepower upgrade kit. This JDM 675 kit optimizes the factory supercharged setup, eliminating the need to upgrade to potentially $5000.00+ superchargers to reach the same power levels. The components of this kit are the same as the JDM 650 Horsepower kit, with the addition of a Ford Racing throttle body. The stock Ford air kit is replaced by the JLT 123mm in order to increase air flow and extend the range of the mass air flow sensor. 

With all parts combined your GT500 will net over 675 HP at the engine and gain approximately 125 horsepower to the wheels from stock! This sort of improvement will make you think about getting a better set of tires!

Expect a noticeable bump in throttle response with improved tip in feel.  Bus loads of off idle torque are available from idle all the way to redline with our tune, so be prepared to shred some tires on demand.  Expect with traction to easily shed tenths off of your 1/4 mile ET.  A slight bump in fuel economy is to be expected ranging from 1-3 MPG average.

You also can safely add efficiency and power as well from cooler air charge temps with an AFCO heat exchanger listed here, and a Ford Performance upgraded intercooler listed here.

The kit can be installed in 5-6 hours and requires a pulley removal/install tool for the supercharger.


Pulley tool sold separate. See details on the VMP Pulley Removal Tool Here

  • SCT X4 programmer 
  • JLT 123mm Air Kit
  • NGK TR6 spark plugs
  • 2.60” Supercharger Pulley 
  • Dual Bearing Auxiliary  Idler
  • Ford Racing Twin 65mm Throttle Body M-9926-CJ65


  • 2007—2012 Shelby GT500 Mustang

*All advertised horsepower and torque numbers are results of in house testing on a Dyno Jet. User results will vary.



Important parts and tuning notice:

By ordering this tune, you agree to assume all responsibility for assuring that it is to be used for off-road and/or competition use only and is not to be used on a vehicle that is registered for use on public roads nor highways. 


Because U.S., Canadian, and other international, state or provincial laws and regulations may prohibit removal or modification of components that were installed on vehicles by Ford Motor Company to meet emission requirements or to comply with motor vehicle safety regulations applicable to vehicles manufactured for use on public roads, JDM Engineering wants you to know the following: 

Most of the parts and services offered in this online catalog are for off-road use or competition use only. Use on State and Federal Highways may be a violation of the EPA Clean Air Act. The Clean Air Act can be found at 
http://www.epa.gov/air/caa/. This document contains in detail what are considered to be violations of the CAA and corresponding penalties for failure to obey and should be read in full before purchasing or installing this off-road or race use only product. Ensuring that all emissions, noise/sound, and speed/use related laws are followed is the responsibility of the Buyer(s). Installation and use of this product indicates that this disclaimer has been read, acknowledged, and understood fully by both the Buyer(s) and Installer(s). The Buyer(s) assume all associated risk of the purchase. 




Emissions Notice:




Federal and several state and provincial laws prohibit the removal, modification or rendering inoperative of any part that affects emissions or safety on motor vehicles used on public streets or highways. JDM Engineering assumes no liability for any violations arising out of any federal, state or provincial emissions or safety requirements on motor vehicles arising out of the customer's modifications and/or use of our products or services. It is the responsibility of the customer to determine if their modified vehicle complies with applicable laws.




California Residents




The emissions laws and regulations of the state of California apply to all non-racing vehicles. Consequently, some parts in this catalog may legally be used in California only on a racing vehicle which will never be operated on public roads.

Please allow 10-15 business days for your tuner to be shipped and is subject to change due to high demand and race season.


**Please contact us directly for international shipping arrangements. 
E-mail: Sales@teamjdm.com
Phone: 732-780-0770


Additional Details

2007-12 GT500 675 HP Parts
24.00 (in)
24.00 (in)
24.00 (in)

1 Review

  • 5
    Awesome Kit!

    Published by Eddie Sprabary on 14th Jun 2021

    I was able to install this kit in approximately 6 hours over a two day period after work. Installation of each part and the tune is pretty straightforward. The performance difference from stock is simply WOW!.....It is like a different car. I can’t wait to get cams installed.

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