Kart racing or karting is a variant of open-wheel motorsport with small, open, four-wheeled vehicles called karts, go-karts, or gearbox/shifter karts depending on the design. They are usually raced on scaled-down circuits.Karts vary widely in speed (known as recreational go-karts ) intended for limited to lower speeds. and some (known as Superkarts) can reach speeds exceeding 260 kilometres per hour (160 mph), From age 5 to 75, racing go karts have become popular all over the world with people looking for an exciting way of having fun. In fact, many amusement parks have added rental racing go karts (called concession karts) that use detuned 4-stroke go-cart engines for a milder experience.