times than much more expensive and technically advanced racing machines. Some British and Australian classes also include 125 cc gearbox karts. Superkarts race on "long circuits"(e.g.  Silverstone ,  Laguna Seca ,  Magny-Cours ). In the UK they also race on "short circuits" (e.g. Kimbolton ), "short circuits" are under 1,500 metres in length. Superkarts