ReadyLIFT leveling kits are the fastest safest least expensive way to bring the front of your vehicle level with the rear. Our innovative Smart Strut Technology (SST) mounts on top of the strut assembly eliminating the hassle time and danger of compressing springs. ReadyLIFT steel strut extension will maintain a smooth OEM ride without adding pressure to stock suspension components guaranteed! The 66-5000 strut extension provides 3" of lift which gives clearance to add up to 33" tires to the 1999-2006 Toyota Tundra 2WD & 4WD.