Extended steering knuckles and a one-piece sub-frame are the key to this 4" Tuff Country lift kit for the Chevy Silverado and GMC Sierra. 3" cast iron blocks along with rear add-a-leafs lift the rear to level the vehicle. Differential drop brackets and torsion bar drop brackets keep everything in alignment. Also included are lateral compression arms which, along with the 3-piece sub-frame, strengthen and stabilize the front end. Four SX6000 Hydro shocks included. Shock boots sold separately.
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