I have one of Rhodegear's Interstate Hitch Racks. They're big & beefy with lots of adjustability and their aluminum finish matches the X's rack and step rails perfectly. Since I already have 2 Big Mouths up top, I was planning to go with the 3 bike ($230) which of course the bike shops were out of! To my surprise, the four bike was on sale for only $209! This unit was made for the Xterra. It is sweet! Now I can carry all four of our bikes and throw a canoe or 2 kayaks on top as well. Their site is under construction or I'd attach a link.