Tuff Country 99-06 Chevy Silverado 1500 4x4 2in Leveling Kit Front (No Shocks)Tuff Country's torsion bar keys are designed as an easy solution to level trucks with factory torsion bars. These replacement torsion bars reindex the factory torsion bars which lifts the truck without cranking up the factory torsion bars. This Part Fits: Year Make Model Submodel 1994 1997 Chevrolet K1500 Base 1988 1998 Chevrolet K1500 Cheyenne 1999 Chevrolet K1500 LS 1988 1992 Chevrolet K1500 Scottsdale 1988 1998 Chevrolet K1500 Silverado 1991