NINE LEVELS OF PERFORMANCE -- Nine-position easy-to-adjust knob allows customized damping control and firmness for on-road and off-road flexibility DESIGNED FOR HARDWORKING VEHICLES -- Ideal for stock or lifted trucks, SUVs and Jeeps that tow, haul or go off road INDUSTRY FIRST -- Recognized as the first nine-position manually adjustable shock series in the off-road market REDUCES FADE -- Nitrogen gas pressurized to 120 PSI to minimize air-to-oil mixture and reduce damping performance fade and foaming STRONG AND DURABLE -- Features an application-specific 18mm nitro-carburized piston rod to reduce scuffs and corrosion, double-welded loops at stress areas and 1.25-in. sintered iron piston for enhanced structural integrity