The Porsche 718 RSK were important milestones on Porsche's path to the sports car Olympus. They were derived from the Porsche 550 RS Spyder, but developed steadily and were eventually able to outperform even much more powerful racing cars. They are still admired today and fetch stupendously high prices at auctions when they come onto the market. This report traces the history of the RS-K models and shows them in many photos.