Originally Posted by
funked1
S2 Build question... There is a large (~12mm dia.) O-ring that is shown in the manual going on the outside of the shock body, between the top of the spring and the preload collar. The manual is not clear about exactly how these go on, and none of the photos of assembled cars show the O-rings. Should I just leave those out?
There is a groove inside the collar that they fit into.
They provide resistance so the screw collar doesn't move when you don't want it to.