Mototec Alien Db-01 50cc 2-stroke Kids Dirt Bike BlackThe MotoTec Alien 50cc Kids Dirt Bike The perfect kids starter dirt bike. The latest generation of 50cc 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. Suitable for both wet and