This is the maximum package of options for Wilbers-Racing-Suspension shock absorbers. With its help the preload can at any time be hydraulically adjusted for up to 10mm by a manual crank. No more annoying fumbling with a hook-key! The ride height can be adjusted for + - 5mm, in total for 10mm allowing an optimal riding geometry that adapts to any situation or requirement. Through this, features like load distribution, handling or driving style can easily be influenced. The height adjustment can be made while the shock is still installed using a mouth tool. Subsequent conversion of older shock absorbers is possible in most cases.