In 2011, Dodge and its model sub-brands, Dodge Ram, and Dodge Viper were separated. Dodge said that the Viper was to be an SRT product, and Ram a standalone marque. In 2014, SRT was merged back into Dodge. Later that year, the Chrysler Group was renamed FCA US LLC, corresponding with the merger of Fiat S.p.A. and the Chrysler Group into the single corporate structure of Fiat Chrysler Automobiles. Subsequently, a newly formed merger agreement between FCA and the PSA Group called Stellantis, was established on January 16, 2021.