Magnum Truck Racks Bed Rail Kit Model RK28178Magnum Truck Racks Bed Rail Kit Model RK28178 Magnum Truck Racks offer a wide range of high quality bed rails. Our bed rail kit is designed to improve your truck's utility and style, providing a reliable solution for carrying more cargo. Let's discuss how bed rails benefit your truck. How a Bed Rail Improves Your Truck. As a truck owner, you know that your truck's bed is one of its most essential features. Here are three ways a bed rail can improve