The Carrera RS 2.7 was the extreme version of the 911 that Porsche conceived for a high-performance touring car and for a potential race winner. The model was officially available in 1973 and was offered in various configurations, from a more civilized version to some more extreme almost-racing cars. In pure racing trim, the RS was a success, winning some major endurance competitions in Europe and in the USA. An even more performing version came with an enlarged 2.8, named the Carrera RSR.