The Frame Outriggers came to be while searching for a good way, I ran into one of my competitors making something with the same idea but only done halfway. We finished the job and made them the way they should be made, made to last and take the abuse rock crawling can dish out. You can see how they are angled front and rear to avoid hanging up on rocks and how they are reinforced to take the pounding too!
These weld on both the side and bottom of the frame for greater strength and the end caps completely box the structure for maximum impact resistance. These would work equally well as lower link mounting positions on either the inside or the outside of the frame and thats why we make them both 4.5" x 4.5" & 7" x 4.5" long for the flat bottom surface. Also, being 1/4" thick helps a bit:D