The last Dodge Viper rolls off the line...

Watch the SpeedFactory Charger set a world record

The 9.453 second run is good enough to set the world record for production-based LX-platform cars in the quarter mile. Powered by a GEN III 426 Hemi stroker engine with a Vortech V-7 supercharger, the car puts out over 900 hp. To get the relatively low 3,750-pound curb weight, SpeedFactory stripped the interior, making it pretty useless on the street despite being based on a production car.

2010 Viper ACR-X development footage

2010 Dodge Viper ACR-X preview

Dodge proudly introduces the Viper ACR-X, a combination of the record-setting, street-legal Viper ACR and the championship-winning Viper Competition Coupe. The Viper ACR-X utilizes the 600 horsepower ACR as a starting point and with the aid of headers and a low-restriction exhaust system pushes it to a pavement-pounding 640 horsepower. The suspension is upgraded and tuned solely for the track, optimizing its performance on the toughest road courses. Additional aerodynamic upgrades improve downforce, help stability and improve grip in high-speed corners.


This car was not designed for Sunday cruisers. This is a purpose-built race car, created for serious racers only who demand serious speed and performance. The Viper ACR-X, similar to the Viper Competition Coupe, boasts safety features including a factory-designed roll cage, fuel cell, and race seat. Additional racing components have been included to meet the added durability and reliability requirements for competition. With its impressive performance and safety features, no other race car can match the value of the ACR-X – all at a price point very close to that of the street ACR while just a fraction of the cost of the track-only Viper Competition Coupe. Call Viper Race Headquarters at (888) 960-3333 for more information.