CSK-C23-17.1 / CSK-C23-17.1 - Application Notes CST 4" Lift Kit - With CST Shocks 1999-2006 Chevrolet Silverado 1500 2WD 1999-2006 GMC Sierra 1500 2WD Kit Includes: - 4" Spindles - Taper Sleeves - 2" Block And U-Bolt Kit - CST Performance Shocks