Front HQ Series Coil-Overs allow for a 1"-3" lowered stance (2" optimal) and are a direct replacement for factory shock and spring.  They utilize an impact forged aluminum body and mono-tube design to deliver excellent ride quality and handling. They allow fine tuning of the ride quality and handling via the rebound adjustment knob with 24 positions of adjustment. Premium Hyperco springs are used that are CNC cold wound with high tensile steel.  Ridetech upper StrongArms are required for proper alignment and to correct ball joint angle. This system is not compatible with trucks equipped with factory air suspension.