Radical Sportscars is an auto manufacturer and constructor of racing cars from England. The company was founded in January 1997 by amateur drivers and engineers Mick Hyde and Phil Abbott, who built open-cockpit sportscars which could be registered for road use and run on a track without modification. Although most of Radical's sportscars are road legal, they also build some purpose-built racing cars, such as the SR9 Le Mans prototype. The company's first car, the 1100 Clubsport, was based on a Kawasaki motorcycle engine placed inside a small open-cockpit chassis which could house two adults. The cars were intended to run in the 750 Motor Club's races under the Sports 2000 category, with co-founder Hyde driving. In 1999, Radical had built enough 1100 Clubsports that they decided to create a one-make series based around the car. Backed by the British Racing and Sports Car Club, the series featured identical cars that were open to anyone who owned an 1100 Clubsport. The same year, Radical debuted their second model, the Prosport. Available with Kawasaki or Suzuki engine up to 1500 cc in displacement, the Prosports were even more powerful and faster than the Clubsports, and even included an adjustable rear wing. The cars were also brought to the United States for the first time, for use in the SCCA D-Sport class in 2000.