WnP 1" - 3" Lift Cast Torsion Keys with Front Shock Extenders Fits: 1999 - 2006 Chevy Silverado 1/2 ton , Tahoe, Suburban Fits: 2000 - 2006 GMC Yukon , Denali and Suburban 1500 4wd 1" - 3" Lift Adjustable Cast Torision Bar Keys Bolt On Shock Extenders Lifetime Warranty