I have a 1975 DT175 and it has the shocks with the extra oil reservoir on them. They only have 2" of travel (with the bike just setting there there is only 2" of shaft sticking out of the shock. Is this all they have or is there some thing wrong with them. If they are supposed to have more travel than this does any one have a exploded view of them? Dan

There is a shock preload adjuster on the bottom if they are stock. Check that out.

If the preload is maxed out, your shocks are done and you need new ones. Oil seals don't seal as well after a while and they lose their oil, which is likely your problem.