I used 6" channel iron for the rail.You would have to take some measurements to confirm what works for your bike.I cut the long one 6 feet point to point 30 degree miter,then two short ones 1 foot with the same angle cut on one end.one side is welded,the other is hinged.The 2" tubing was used to go into receiver hitch,these dimensions will have to be chosen by you for your application,I angled mine up for ground clearance but in doing so my liscence plate is blocked so I may have to mount it where it can be seen by the authorities.The two arms coming straight back brace the rack in the hitch and are also tie down points,these are bolted to bumper and underside of channel,the length of these must also be determined by you.You can purchase one made of aluminum for about 3 or 400 hundred but I like to make stuff like this myself