The 3.5" lift kit for the Chevy Avalanche by Rough Country features upper control arms with pressed in POM ball joints with Clevite brand OEM style rubber bushings to give your ride a greater range of motion. The upper strut spacers bolt on without requiring strut disassembly and will maintain the factory ride quality. Your Avalanche will now be level for a more aggressive stance. Differential drops are included to maintain the proper axle angle and a differential skid plate is included for additional protection from hazards or debris. Rear coil spring spacers, extended sway bar links and rear shock relocation brackets complete this package. If you ever change your mind, your Avalanche can be returned to stock. Tire/Wheel Combos285/70R17 tires on 17" factory wheels 285/65R18 tires on 18" factory wheels 285/55R20 tires on 20" factory wheels View lift kit installation instructions</strong