The Chrysler Viper GTS-R (also known as the Dodge Viper GTS-R when raced in North America) was a successful racing variant of the Dodge Viper developed in conjunction with Chrysler of North America, Oreca of France, and Reynard Motorsport of the United Kingdom. Officially unveiled at the 1995 Pebble Beach Concours, it has won numerous championships and famous events in its history. Some chassis are still in use today.
In total, 57 Viper GTS-Rs would be built. After the production of an initial five prototypes for testing and early usage by Oreca and Canaska/Southwind, 52 more cars would be built. Although some would be used by the factory teams, most would be sold directly to customers for use in whatever series would allow them. Viper GTS-Rs continued to be built into 2005, after which Oreca concentrated on maintaining and supporting the existing Viper GTS-R fleet.
Although the production cars have mostly been known as Dodge Vipers, the Dodge brand did not sell the Viper in Europe. Because the new cars, named GTS-R, were built in Europe, they were mostly known as Chrysler Viper GTS-R. However cars racing in North America usually ran under the Dodge banner, making them Dodge Viper GTS-Rs. This naming difference therefore depends on location and region. The cars themselves actually carried no badging for either Chrysler or Dodge, with only the Viper GTS-R name appearing on the side of the bonnet.