Generally a kart has a lot of similarity with an ordinary car, however, it s functioning is very different. The kart has neither suspension nor differential, that s why when it enters a curve the chassis twists and deforms so that the tire doesn t drag and it can be able to make the curve. Therefore, the study of the structure of a kart is relevant so that can be possible to analyze its behavior and search improvements for it and finally increase its performance on the track. This report proposes a methodology with the aid of two softwares, SOLIDWORKS and MATLAB, to obtain the stiffness matrix of the chassis through simulations and tests. With this matrix it s possible to determine the displacements resulting from any forces applied to determined points (joints) of the structure. This method was validated from comparisons with the analytical solution of several problems. Therefore, it was possible to simulate real situations that occur with the kart during a race like breaking, acceleration and the deformations resulting the making of a curve. The software was used to apply forces referring to the weight transfer that occur in vehicles during its movement. Due to the study of the structure s behavior, with the application of forces referring to the weight transfer, during a curve, it was verified some typical behavior in a race, like for example, the loss of contact between the tire and the ground.