there are 2 part numbers for the metaltech. the softer rate ones give 2inches of lift and the heavier rate ones are 3inches of lift with no added weight. once you put stuff in the back and add the spare tire to match the 33s or what ever size you decide to run they compress to 2.5 or so. if a rear bumper is added or even a hybrid tire carrier itll compress them down to somewhere between 2.5-2 inches.
i currently have the lowest rate ones and wish i went with the heavier ones. once i put all my recovery gear and my spare tire back that. or even any heavy cargo they squat. they do ride amazing though, 100x's better than any of the other springs ive run. including the regular superflex, the superflex HD's and the lowest rate OMEs