You can make the tool if you really want to. I made one for me and I made one for one of my buddies. It's easy, but you have to find a large fitting of some kind with an outer hex shape that is the same size as the inside of the nut. Then just cut it off and weld it to the end of an impact socket. Works great. I can't tell you where to get the fitting, though. I just happened to already have a bunch of fittings and already had some that were perfect. And by the way, it has to be made of steel, so you can weld it.
Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!
You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.