Pocket bike racing, also known as Mini GP racing or Minimoto racing, is a type of racing that is done with the use of miniature racing motorcycles, that are usually called pocket bikes. Pocket bikes are raced around go kart tracks. It is a sport that is very popular in Europe and Japan, and is becoming increasingly popular all over the world, in particular in the US.

The usual pocket bike is about a fourth the size of a regular motorbike, and has an engine of between 40-50 cubic centimetres outputting between three and fifteen hp, depending on the specific model. There is no suspension on a pocket bike but they rely instead on the tires absorbing bumps. They generally weigh roughly 35 pounds. The entry-level models usually produce around 3 to 4 horsepower, but more expensive models produce more power. The very best pocket bikes for racing provide a good power-to-weight ratio. Modifications are often used to enhance acceleration and speed. Despite their miniature size, both children and adults race pocket bikes at speeds of up to fifty five miles per hour when raced in good conditions.

Because they are small pocket bikes are easy to transport, and the cost of the bikes is low which increases their appeal to both children and adults. The least expensive pocket bikes made in China start at around $200 for a no frills model, while you could pay as much as as $5500 for a top racing bike made in Italy. Children as young as six or seven can be taught the motorcycle basics while adults are able to experience the excitement of motorbike racing without the huge costs and danger involved in regular full size motorcycle racing.