These over-built tubular fenders were designed for maximum suspension articulation while still maintaining a factory-style inner fender liner. Tough 0.120"wall tube is attached to 1/8" steel plating for one tough fender design. RRC Tubular Flat Fenders are direct factory replacements with a built in full fender liner (some drilling my be required) allowing for all factory engine accessories to be mounted by using the factory mounting hardware. Fenders are primed for paint. Though these flares cover most tires, they are designed for off-road use and additional flare coverage may be needed for on road use in some states. Upgrade model bolts directly on using factory inner liner has ground welds and is ready for paint. The upgrade version does not include the side marker light housing and is designed for off-road use only.