I ran spacers because they were temporary. Yes I jumped my quad and everything. I replaced the bearings just as normal up keep I didnt have to. And also I don't race mx but I probably could have and I got good spacers ( durablue) and I rolled my quad down a hill climb with them on and nothing happen to them. So before you go assume crap find out the facts.And what'd he tear up? And also if they are so bad then why'd hhe run them?