Series 4000 steps from Go Rhino are the best 3" Nerf bar step on the market today. Tucked up tight to the body, they hide your frame and give you a perfect foothold to get into your rig. These Go Rhino 4000 nerf bars are made with a special patented foot plate on an indented tube to retain the natural structural integrity of round tubing. These steps are strong, stylish and will last you for years. Series 4000 Nerf Bars are also available in chrome, black powdercoat and in wheel-to-wheel lengths. Installation is easy with bolt on installation and usually no drilling is needed for most applications.This product fits these applications: 03-06 Ford Expedition