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For the front, remove the top nut, then the bottom bolt, then remove the shock. Reverse for installation. You have to kind of push up the plastic wheel well stuff to get the shock to slip on/off the upper mounting bolt. You don't have to remove it though, just push it up a bit.
For the rear, remove the bottom nut and bolt, then the top two bolts. Install the top first, then the bottom. You'll need a really long socket extension for the top bolts. I had to put three short ones together to be long enough.
For the rear, make sure when you put those bolts in the top of the shock you use anti-seize. One of my bolts took out the "nut" with it. So, I'd also have a few of those "nuts" ready in case you break them.
Got the Rancho RS9000X's with the air control system. They are great so far. I like the ability to ride on 0 setting then put them up to 9 when towing or carrying a heavier load.
There was nothing wrong with my factory shocks, but everyone seemed to change their shocks, so it sounded like a good idea. I think they are more stable and I definately like the stiffness when I turn up the setting! Less bounce with the trailer hooked up!