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The Tuff Country rear block and u‑bolt kit for 1999–2006 Toyota Tundra 4WD offers a 4-inch rear lift via a cast iron block placed between the axle and leaf spring. Each kit includes lift blocks and extended zinc-plated u‑bolts sized for the application. Built for rear-axle installation, this kit provides a straightforward, cost-conscious way to increase rear ride height for clearance and load management.
Tuff Country 99-06 Toyota Tundra 4wd 4in Rear Block & U-Bolt Kit
