The "Strong" 4" suspension lift kit for the Avalanche, Silverado and Sierra uses extended steering knuckles and a 3-piece sub-frame that includes 2 crossmembers that are conneted by a heavy duty skid plate that's been designed to protect the front differential and stabilize the crossmembers for unmatched strength and durability. Easier to install than the 1-piece lift kit. Lateral compression arms, along with the 3-piece sub frame, strengthen and stabilize the front end. Differential drop brackets and torsion bar drop brackets keep everything in alignment. A carrier bearing drop kit and brake line relocating brackets are also included. For the rear, 4" cast iron blocks are included. Longer shocks are required and sold separately.
View lift kit installation instructions