The Dodge Viper ACR was a series of high performance variants of the Dodge Viper. The ACR name, meaning American Club Racer, had previously appeared on the Viper ACR (SR II), and in 2008, Dodge revived the ACR for the Fourth Generation Viper (ZB II). These cars were created to be track ready, yet were still street legal, and not as hardcore as the Viper ACR-X. As well as an aerodynamics package, the ACR was fitted with upgraded suspension and brakes, and was powered by the standard 600hp 8.4L V10 engine. Dodge offered the ACR with in variety of limited edition packages such as the Voodoo and 1:33 Editions. Production of the ZB II Viper ACR lasted until 2010.