1988-2006 CHEVY/GMC K1500 4WD 2000-2006 TAHOE/YUKON/SUBURBAN/AVALANCHE/ESCALADE/DENALI 2WD/4WD Maxtrac Suspension's torsion keys offer a quick and easy solution to changing the height on the front of your vehicle, for the desired stance. The installation of these keys provide additional clearance for the front of your vehicle, allowing a larger tire size. Lifting the back is accomplished by a lifting shackle or blocks. SPECIFICATIONS FORGED STEEL CONSTRUCTION INCREASED GROUND CLEARANCE LIFETIME WARRANTY POWDER COATED FOR LONG LIFE 1/4" STEEL SHOCK EXTENDERS DIMENSIONS: 11x6x3