ReadyLIFT leveling kits are the fastest, safest, least expensive way to bring the front of an F-150 level with the rear. The 66-2059 strut extension provides 2" of lift which gives clearance to add up to 33" wheels and tires onto 2004-2014 2WD F-150 trucks, and 35" tires on 2004-2014 4WD F-150 trucks.