Debuting as a 2008 model, the Shelby GT500KR, “KR” being an abbreviation for “King of the Road”, pays homage to the original 1968 Shelby Mustang of the same name. The GT500KR, with a MSRP of $79,995, features new components and performance enhancements over a standard GT500. Under the hood, the GT500KR uses the same supercharged 5.4 L DOHC V8 as the standard GT500, but the KR’s engine has been tuned to make 540 hp (403 kW) @ 6250 rpm and 510 lb·ft (691 N·m) of torque @ 4500 rpm, gains of 40 hp and 30 lb·ft of torque, respectively. While the Tremec TR6060 6-speed manual transmission remains the same, the GT500KR also benefits from a more aggressive 3.73:1 final drive ratio.
To improve handling and help offset the car’s front-heavy weight distribution, the GT500KR features a Ford Racing strut tower brace and uniquely tuned struts, shocks, and springs. Finally, to maximize the GT500KR’s performance gains, measures were taken to keep the car’s weight in check. Through the use of a carbon fiber hood and a revised exhaust system, the overall weight of the GT500KR is actually 22 lbs lighter than a standard GT500.
