I took close to 4 1/2" out of mine. I'm 6' tall. Hotrods mowhawk almost rubbed when he sat in mine, so keep that in mind. I sat in mine and had my wife measure from the top of my head to the cage to decide how much lower I could go and still have a little room for movement when the going gets rough. You don't want to bump your head on the top of the cage at 40 mph. I would say that doesn't feel good.