You're better off putting a 10" ONYX light bar on the shock tower than some 40" chinese crapola over the roof.
One of the main reasons why buying a smaller, high quality light is better than a big ass cheap light. They work FAR better mounted down low, but space is a premium down low. The other reason is the amount of light per available watt of electricity, which is also at a premium on a UTV.What I do know is if you ride with a group or in dusty conditions an overhead lightbar is pretty much useless. Go with some pods mounted low and a 10" shock tower bar.