Introducing the MotoTec 52cc Villain Kids Dirt Bike - The perfect kids starter dirt bike. The latest generation of 52cc mini bike engines are faster torquier more reliable and even easier to set up and start than ever before. 2-Stroke engines are preferred as they provide almost double the power of the same size 4-stroke. Easy pull start improved carburetor and all of the standard safety features support and reliability MotoTec provides.