Uncut, I felt mine lifted the wheel up too far, but I was also very afraid of cutting it too short and making it useless. I kept cutting a little off, reattaching it, removing it, cutting more off... Until I got tired of it. It can be tricky to install securely. Mine's a little loose, and I've been meaning to pick up the more secure bracket for it. Once I do that, I'll probably cut a little more off. As far as I can tell, there's no advantage to leaving it uncut, except the time you save not cutting it. But of course there are disadvantages of cutting it too short, so be careful.