Ya a buddy of mine had a huge problem with his Fabtech lift. He tried talking to them about replacing the part under warranty (I wish I could remember exactly what it was, but I think it had something to do with an upper control arm). They asked if he had ever had it offroad. He said "yes," and they said, "sorry, that means you voided your warranty." HA! If my buddy's telling the truth, that's not a very good warranty. Someone else once told me that somewhere along the paper work, it says "not for offhighway use."

Then again, I've never done any real hard, serious research, so don't take this too seriously; I just wanted to put in my two cents.