If you want to fit big 35" tires for some real off-road prowess, then your 2004 to 2007 F250 or F350 is going to need a 4" to 5" suspension lift kit. These kits add an aggressive ride height to your truck all while creating more wheel well clearance, which gets you the ability to fit on big wheel and tire combinations. Our 4" to 5" suspension lift kits are available in a couple of variations so that you can get a high-performance kit for hyper-aggressive off-road applications or a more basic kit for use on the street or to meet your budget. All of these kits are a great way to give your Super Duty a whole new look that will make your truck one of the baddest things on the street or the trail. Some of these systems even feature immensely powerful coilover conversions that provide extreme levels of performance. Ford Super Duty Fitments: 2004, 2005, 2006, 2007 Ford F250 & F350 6.0L Submodel Fitments: FX4, King Ranch, Platinum, Lariat, XLT, XL Some Exceptions apply, please see individual product pages for specific fitments.