Depending on your car, the rebound spring may be free or not at static state. On my PLUS 4 2005 the rebound spring was not free.
In this case the stiffness of the suspension was very hard on small bump and after becomes soft on big bump, the opposite of a conventional suspension.
When the rebound spring is not free at static state, the gobal stiffness of the suspension is the sum of the both spring stiffness and determines the static height of the car. If you cut the rebound spring and get it free, the stiffness will be lower because only the main spring acts and you may get a lower static height.
I have installed the SSL front kit, in this case you can preload the main spring like in the conventional cars and get a free rebound spring. The suspension on small bumps is soft and increasing stiffness on bigger bump. You get quite a conventional suspension.
During the assembly with the SSL kit the global preload of the springs is lower, preload being adjusted and increased after assembly. Assembly is easier, main spring being free at the beginning.
Surely if you cut the lower spring if it's not free you might find the static height higher?
Nick
