The FX running board from Dee Zee is a lightweight, slim-line running board constructed from heavy-duty extruded aluminum. The FX running boards feature textured rubber step pads, providing a sure-grip step to help you into and out of your truck. Built-in corrosion resistance makes these running boards not only a durable, sure-grip step into your truck, but also a defensive barrier for the side of your truck. The built-in mud flap and width of the FX running board defend the side of your truck against road debris and chemicals.