Item Description: Placement on Vehicle: Front + Rear Front Lift Height: 3 inch Rear Lift Height: 2 inch Front Spacer Thickness: 1.89 inch/ 48 mm Rear Block Thickness: 2 inch/ 51 mm U-Bolt Size: 9/16"-18 Square - Long 10.24 inch/ 260 mm Material: Steel Color: Black Vehicle Fitment: For 1999-2006 Chevrolet Silverado 1500 2WD For 2007 Chevrolet Silverado 1500 2WD Classic Body Only For 1999-2006 GMC Sierra 1500 2WD For 2007 GMC Sierra 1500 2WD Classic Body Only **Coil Spring Suspensions Only **Will NOT Fit 2007 New Body Style .