I put these springs in believing they were 4.5" as advertised, they turned out to be 3.5" springs. I had seizures trying to level my jeep after installation. I finally pulled them back out and spoke to a Rubicon Express technician and was told to measure 21-1/4 OAL. they measured only 20 inches. Very frustrating and now I have to buy another set to get the Jeep where I want it. I have a slightly used set of springs that I don't know the actual size of and didn't pay attention to for some $$ and now it's too late to fix it.