Optimised response characteristics and large reserves create very good road adhesion for great grip and high comfort. These suspension struts permit infinite adjustment of the spring pretensioning, a 22-position adjustment of the traction level. The Classic version is the same as the "normal" version except that it has a black spring instead of a blue one. Approval: with operating licence (Germany only). As an option, the suspension struts can also be ordered at extra cost with hydraulic spring pretensioning (625). Wilbers products can be used for repairs and maintenance.