We were so excited about the new radius arms that we had to put them on first. They are 11 inches longer than the stock arms and are ultra-stout with a 3/8-inch-thick wall. The aft end has a solid rod that has been machined to accept a giant rod end. Ours were prototypes (as was the rest of the kit) that were cut and welded to make the bend for tire clearance. Future arms will be bent with a heavy-duty bender, eliminating the cut and weld process.