Rough Country - 206-3.5-inch Suspension Lift Kit for Chevrolet: 07-13 Avalanche 1500 4WD FITMENT: Chevrolet: 07-13 Avalanche 1500 4WD KIT CONTENTS: Front: Upper strut spacers, upper control arms, upper POM ball joints, ball joint caps, driver and passenger side differential drop brackets, differential skid plate, brakeline brackets, and hardware; Rear: Coil spring spacers, lower shock relocation brackets, extended sway bar links, and hardware BENEFITS: Easy bolt-on installation; Maintains factory ride quality;Able to be returned to stock; No need to disassemble your struts to install; Differential drops maintain proper axle angle; Control arms include Clevite brand OEM style rubber bushings; Control arms include POM ball joints for greater range of motion and easier installation; Ball joints are already pressed-in to ease installation TECHNICAL NOTES: Does not fit Auto Ride or Auto Leveling models; Does not fit models with electric steering; Retain factory wheels with .25-inch wheel spacers (#1065) ITEM SPECIFICS: Installation Time: 6-8 hours; Backspacing: 5.5-6-inches; Recommended Tire Size: 33-by-11.50; Weight: 54-lbs