GT4-CS Mustang

  • Designed as a dual purpose super-performing Mustang
  • Drive it to the track, drive it on track, and drive it home
  • Excellent Track Day and Motorsports Country Club car
  • 445hp 5.0L 4V TiVCT Coyote Engine, optional 495hp available
  • GT4 Club Sport Performance Package
  • Tailored for the “Gentleman Driver”
  • Enough creature comforts to support a premium driving experience


For Track Day and Motorsports Country Club drivers, the Kenny Brown GT4-CS Club Sport Mustang is an over-achiever and a fantastic car to drive on track. It's a super-premium performance Mustang specifically designed as track day car with manners for occasional street car duty.  Kenny gives you everything you needed for a great weekend at the track ore taking the long way home. The growing popularity of enthusiast track days and motorsports country clubs are a fantastic way to fully experience the driving pleasure of any Kenny Brown GT4 series Mustang.

The GT4-CS is designed to position as an affordable track car, with maintenance and repair costs at a fraction of its European counterparts mixed in with a lot of "wow factor".  It’s easy to understand the awesome on track performance of the Kenny Brown GT4-CS Mustang when you understand it’s racing-inspired DNA, even with an air conditioner, power windows, and a stereo. This is a car you will want to be seen in at the Club and around town.

Kenny pumps up the Coyote 5.0 TiVCT high-revving engine to 445 horsepower with a serious 495 hp option available.  The GT4-CS is incredibly well balanced with incredible handling and confidence-inspiring driving characteristics.  Kenny artfully selects the content and equipment including a special version of his critically acclaimed AGS 4.0 Advanced Geometry Suspension System to suite your individual needs and driving experience.  To balance the package further and make it one of the best cars you've ever driven, he adds specific upgrades to the powertrain, drivetrain, wheels and tires, brakes, exhaust, interior, exterior and a couple of “special” things we don’t talk about in public. As always, there is a plethora of performance options to truly make your GT4-CS your very own and the envy at the track or country club.

Kenny Brown GT4-CS Mustang conversions are available for 2011-2014 Mustang GT’s with the 5.0L Coyote engine, BOSS 302 Mustangs and Shelby GT500’s, and 2005–2010 Mustang GT’s and Shelby GT500’s.

Content based on a 2012-13 Mustang GT with the Track Pack option. Content varies slightly with stock GT, V6 or GT500.

We offer a free design service with many options to further customize your Kenny Brown Mustang to make it your own. It's on the house - extra service and advice with Kenny involved from the start to oversee your project. We can help as little or as much as you would like.  You'll see and we can create a plan that meets your goals and budget… and when you're ready, we'll bring the project to life.  Our design experts can work with you by phone, online or by visiting our Performance Center.


  • HO Engine Pack - 435 hp (495 HP Optional)
    • Cold Air Kit
    • Oil Separators
    • Custom 92 octane track calibration
  • Road Race Oil Pan


  • Upgraded exhaust w/high-flow mufflers


  • Performance Shifter


Rear End
  • Custom KB specific torque sensing R-style differential
  • Boss 302 Aluminum Differential Cover
  • 3.73:1 Final drive ring & pinion


  • HD aluminum radiator
  • Positive flow radiator ducting
  • Engine oil cooler


High Performance Brakes
  • Brembo GT Track Pack Mustang calipers
  • Rear 14” Rotor Upgrade
  • High temperature brake fluid
  • KB Front brake cooling ducts (fascia to spindle)
  • KB Select GT Track Brake pads front & rear


Wheels & Tires
  • Performance Wheels -- 18”x10” front and 18”x11” rear
  • Pirelli PZero Corsa DOT race tires -- 295/30/R18


Chassis Support
  • KB Jacking Rails
  • KB Extreme Matrix Chassis Support System
  • Rear Shock Tower Brace
  • KB  Sport Cage


  • Kenny Brown AGS 4.0 Track Sport Suspension
    • Advanced Geometry Suspension System
    • Adjustable front Sway Bar


Track/Sport Springs and Shocks
  • KB specific Track Sport Adjustable Shocks
  • KB selected spring rates for specific driver style
  • Adjustable ride height


  • Side Skirt Splitters
  • Paul Brown Racing Heat Extracting Fiberglass Hood
  • Paul Brown Racing Boss Plus Rear Spoiler
  • Front Splitter w/fender air dams


  • Driver’s left foot dead pedal
  • Rallye style one-click harness belts


Serialization & Graphics
  • Dash plaque & Under hood production plaque
  • Special exterior GT4-CS graphics package
  • Log Book, set-up, history & maintenance info


  • Set-up class for you or your crew on your car
  • Test day with Kenny helping set up your car
  • Driver Coaching with Kenny 
  • Please call our Performance Center to talk with one of our design pros about all the options available to further custom tailor your Mustang for your specific requirements.  Call 317-396-2768 or email to



2013 Kenny Brown GT4-CS Custom Conversions starting at $ 29,950

Final cost will vary as each Kenny Brown GT4-S is hand build, bespoke with content specific to the individual’s needs and budget.