This DIY kit does not include the 2x6 steel rocker. It does however, come with 2 full length C channels CNC cut and bent to allow for super clean and strong mounting of the 2x6 (not included) The kit also includes 4 caps for the end of your 2x6 designed to fit when a 45 degree angle is cut in the ends. Significant cutting and welding is required. The rocker is completely cut out, pinch seam and all. You then weld in the C channel which provides a tight slot for the 2x6(not included) by capturing it top and bottom they create a very strong mounting platform. Also no more having to weld to the body filler infested pinch seam, and not to mention no hammering the seam flat!! These are part of our Ultimate XJ Stiffener package. Add the boatside kit and our front, mid and rear stiffeners for the ultimate in XJ strength.