The Grille Guard kit: the foundation of the Trans4mer mounting system, a simple, bolt-on system that installs around the factory bumpers. Comprised of two uprights and two crossbars. This is an integral required component that provides the base for all other options. The original WARN Trans4mer can be configured in several ways to match your needs. This system is engineered so the Grille Guard uprights bolt directly to the vehicle's frame, and the Winch Carrier then bolts to the Grille Guard uprights. All components are sold separately, so you can configure the system to meet your needs.