The Dirt King over-sized wheel wells are designed to replace the factory inner fender wells, allowing for proper clearance when 37” tires are installed with long travel suspension. These wheel wells feature a 2.5” larger opening compared to stock and are a complete bolt on application. Everything needed for install is included along with easy step-by-step instructions. In addition, we manufacture an aluminum tank for the windshield wiper fluid that can be purchased separately. The wheel wells are designed for a factory air box, some modifications may need to be made for an aftermarket air box. This product will not work with factory fenders and must be installed with fiberglass fenders.