In 1992, the SA 250 engine was developed to power the Swatch Hybrid car and to charge the batteries of this advanced project. Equipped with 2 valves per cylinder, two spark plugs per cylinder and turbocharged, this lightweight engine was delivering 25 KW to the Generator.Swissauto started to modify the engine radically to be used in Motorsports for Karts. Instead of the turbocharger, the cylinder head was modified for better flow and higher rpms. The result was the worldwide famous and succesful SA 250, which was produced from 2000 to 2006 within different companies.This engine is still the most sucessful 4 stroke race Kart engine worldwide.With the swissauto 250 single cylinder engine, a worthy successor is launched.