2000-2006 Tahoe/Yukon/Suburban/Avalanche/Escalade/Denali 2WD/4WD 2007-2013 Tahoe/Yukon/Suburban/Avalanche/Escalade/Denali 2WD/4WD Maxtrac Suspension's rear shock extenders are designed to provide extreme stability for a lowered vehicle. When brand new shocks aren't required or needed, these extenders lower the mount of the current setup, and adjusting the angle of the shock to its correct angle. SPECIFICATIONS 100% Bolt On Installation Uses existing shocks Corrects shock angle for a lowered vehicle DIMENSIONS: 9x4x3