For those who simply do not want to lose out on the fun of a Two-stroke, Vespa S 50cc Two-stroke ,a powerful, uncomplicated and youthful power plant whose proverbial tractability makes it the ideal choice for the stop and go riding of city traffic. The unique style of Vespa S cleverly combines historical references and cues in a modern interpretation of the most youthful and sporty spirit of the Vespa.