The modification of the spring is mainly to improve the maneuverability, that is to use a harder spring or a shorter spring. The spring controls many of the factors involved in the operation, and the change of the spring can cause a very complex change of control characteristics. With the increase of hardness, it can improve the rolling restraining ability of the suspension, and reduce the rolling of the body when cornering. The reduction of the height of the car can reduce the center of gravity of the body, reduce the transfer of body weight and improve the stability. The car can also reduce the high aesthetic effect.

This is improved on the basis of original spring in order to increase the length and elasticity. It is made with a high grade wire to improve its performance and this can be customized according to requirements.