Unless you have a VERY small rack that will fit in the lowest part (center) of the upside down crossbar it won't help. A normal size rack is still going to sit on the outer ends of the crossbar which will almost still be at the same height as if it were not upside down. EDIT: After looking at the photo again it looks like you will lower the rack by maybe a couple of inches. There is a way to mount the rack directly to the side rails without the crossbars. I have seen it done here before. Do a search for it.