Busted top shock mount on your hard working YJ? Did that trap area let the rust get the best of it? We created this heavy duty rear upper shock mount unit to fix this problem. The mount is easy to install, just cut the old stock mount off, clean up the frame area, weld in the new mount and bolt up your shocks. If the frame is badly rusted, use kit ART-122 to repair that area first, then weld the replacement mount to it.