I don't have racks like that, I have yakima q towers with round crossbars and I mounted a 50 inch to my front bar, I ordered a set of roll cage mounts from axia alloys to mount it but when the time came to install it they were 1/8th " too small so I just drilled holes in my front crossbar and mounted it with the regular mounts and I couldn't be happier with it, i do need light in the back too though so I'm considering mounting one out of sight to the bottom of my toolbox, I would put up a picture but it's not letting me from my phone.