We have bundled everything you need in a leveling kit for your F-250/F-350 4WD with high quality Cognito components and Fox shocks. There is no guesswork.The Cognito 3-inch front coil springs offer the increased ride height you want without sacrificing ride quality. These springs feature a progressive spring rate to achieve optimal ride quality.Cognito HD Track Bar re-centers the front axle and is specifically designed for 3 inches of front lift. The Track Bar fixed-length design makes for a quick install with no unnecessary adjustments.The Cognito 3-inch Block and U-Bolt Kit includes 3-inch tall powder coated semi-gloss black cast steel blocks and heavy-duty zinc plated U-bolts.Factory Race Series 2.5 Reservoir smooth body shocks give you enhanced ride quality and the control you need when heading off the pavement. They take their design from Fox Off-Road race shocks, so they have been thoroughly perfected in brutal conditions that you will probably never see. Fox athletes push the boundaries in competition to develop race-proven performance you can bolt onto your Truck. Factory Series shocks provide improved damping in any terrain. Experience for yourself the incredible performance and precise control that Factory Race Series 2.5 Reservoir shocks deliver.