Heavy Duty Lambo Vertical Upright Door Shock Upgrade 4Autoloc's twin shock upgrade kit offers some of the strongest door support shocks on the market. Kit includes 4 shocks with ball joints and hardware. Ideal for replace worn out shocks. Universal design will work on most kits and applications on the martket. Featured on several TV shows including Monster Garage, and Pimp My Ride AutoLoc Lambo Door kits deliver where all others fails. Insist on the best, and insist on AutoLoc and you be glad you did.