1988-1999 Chevrolet/GMC K2500 K3500 4X4 4WD. 1992-1999 Chevy/GMC Suburban K2500 4X4 4WD. 3" Front 3" Rear Lift Kit. 1"-3" Adjustable Steel Torsion Keys Lift Kit. They're engineered with just the right indexing so that you can adjust up to 3" of lift from the factory ride height.