Hellwig EZ-990 Helper Spring Kit. These, like new, overload springs will fit just about any Toyota Tundra. They are one large leaf, placed on the top of the rack. One person can install these springs, with almost no skill required. Crawl under your truck, remove the “U” bolts, remove mounting plate, place the helper spring on top, install mounting plate, and attach “U” bolts.
EZPZ!