I would have to confirm dimensions, but I believe the CRT wheels have 28mm added offset (wider track) that stock. The CF's I used on the Revo were good for the 2.5 motor indoors, but I have to believe a more powerful motor wouldn't get hooked up as well as perhaps Boas? I haven't been indoors on the clay in quite a while, but am using boas as a starting point when I do. CF's are suppoes to be great outdoors on slightly looser dirt.