Originally Posted by
David Home
Hi Willis,
The black o ring slides onto the shock shaft so that it sits under the piston, you then push the piston through the shock body and then attach the ball link to the end of the shaft. The black o ring helps reduce droop. Some guys use just the 1 black o ring but I've read of some guys putting 3 in there. Hope this helps
The o-rings under the shock piston are used to tune the suspension travel/droop especially if you use hard springs. I prefer to use soft springs and leave the suspension compress a lot under the car's weight. This gives me a lot of droop, I know, but I prefer it that way.