I've read a couple times here that the Rancho RS9000X shocks do not adjust for both rebound and compression. I don't know where that came from. When you try these by hand right outta the box, you can feel the same resistance both ways in the different settings.
Their web site does say these shocks can be mounted in either direction if the application permits. If they only adjusted one way, they would need to tell you that 'cuz it would make a huge difference in the ride mounted one way or the other. Their site doesn't have anything specific about the settings working both ways so I sent a question to their tech support and got the following reply-
Thank you for your interest in Rancho products. The adjustable RS9000 series shocks adjust the rebound and compression at the same time when you turn the knob through all the settings.
Rancho team member
Vladi
These shocks are the best thing I've ever done for my VX. Knowing what I know now, I woulda replaced the stock shocks within three days after buying my VX new. My first two sets lasted for 50,000 miles each. I'm still lovin' the ride with my third set on 8.
Lots of folks like the stock shocks and don't like the RS9000X shocks even set on 9. People like me looking for a softer ride really like the change these shocks give you.
Mark Griffin