The 70KM/H speed claim from the manufacturer has been checked and the model reached over 72KM/H! The 540 size motor is big and powerful for a model of this size as is the two cell lithium battery that gives the buggy all of its speed. To handle the high power the model is fitted with upgraded aluminium drive shafts, drive cups and central shaft. To help keep it under control at the high speeds it has front and rear differentials, hobby grade suspension and 4 wheel drive system. The RC car comes fully assembled and complete with everything you need to get outside and hit the road apart from 4 normal AA batteries for the remote.