1985 200x rear shocks?

[glamiskid395]

so we have 2 1985 200X's
both rear shocks are sagging really bad on them.
the question is are the shock rezzys nitrogen filled?
if they are can i just add nitrogen to the rezzy?

thanks

http://i36.photobucket.com/albums/e38/glamiskid395/200xs002.jpg

[nicker71]

I also have a 85200x, you probably need to send them off somewhere to have them checked out. Chances are they have never been serviced and they maybe worn or damaged parts. If you are low on nitrogen then they are leaking somewhere.