Sorry if this is a stupid question. A Google search, a search of this site, and a search of Rancho's site didn't turn up an answer to my question.

Regarding Rancho 9000XL adjustable shocks...do they provide resistance to both compression *and* expansion? I've heard that some of the gas charged shocks only provide resistance to compression. If that's true of the 9000XL's, they're not what I'm looking for. Thanks.

 

As far as I know all (usable) shocks provide rebound damping.
I got one of the first sets of RS9000XLs for my 2006 and have over 35,000 miles on them. Been very happy with them.

 

Shouldn't your rebound be controlled by your springs more then the valving?

 

hi
i have ranchos on the rear and am happy camper !

 

the shock dampens forces in both directions. it has different valving characteristics for compression and rebound. some shocks may be valved the same in both directions

 

Exactly and a shock valved the same in both directions is called a steering damper.

 

Spring support the load. Shock control it and do the damping.

I wonder if the adjustability is just from compression as well. Most like it is.

 

Seat of the pants tells me that the adjustments control compression and rebound an equal amount. Unladen I run 4 in the front and 0 in back, when loaded I run a 6 in front and 4 or 5 in back.

 

Actually, that would probably make the most sense as they are probably not independent circuits with separate valving and control.

Not much of a difference than a steering stabilizer (or damper) then... Other that the actual amount of damping being accomplished.

 

QUOTE:
Rancho RS9000X
Dial-in the ride comfort of your truck or SUV with a simple **** turn, or even push of a remote. Rancho RS9000X Shocks boast 9 levels of compression and rebound damping, giving you the most versatile driving experience possible.

At the base of each Rancho RS9000X Shock is an easy-turn dial. Start at position 1 for smooth highway cruising. Hit the middle at spot 5 for a balanced everyday mix of pavement, rough road and trail driving. Or, crank your RS9000X Shocks up to 9 for responsive dampening that's ready to rock off-road. They're quick to adjust manually; or, change front and rear on the fly with Rancho's in-cab remote system.

Rancho RS9000XL:
Bigger shocks for todays bigger trucks!
The RS9000XL are a massive new shock series that meet all the demands of recreational enthusiast and are perfect for hauling or towing heavy trailers, boats, ATV's or campers. Rancho’s RS9000XL shock absorbers feature adjustable damping with either a 2.75-, 2.38- or 2.18-in. diameter reserve tube, delivering greater oil capacity. A massive shock body allows the RS9000XL to run more consistent & cooler even under the most demanding towing conditions, enhancing performance and durability, and is constructed with a larger than typical 18-mm diameter chromed piston rod (select applications).