2x?Delrin Front Coil Spring Spacers2x Delrin Rear Coil Spring Spacers2x?Adjustable Front Lower Control Arm4x Max Performance ShocksPremium Silicone Blend Shock BootsHardwareDeveloped and rigorously tested by in-house ASE certified specialists, these spacers are meticulously engineered and precision CNC machined from High-Density Delrin, for superior durability and corrosion resistance. Delrin has the highest tensile strength of any thermoplastic and is the best material available for heavy duty applications, while still being light-weight and resistant to typical corrosion associated with off-roading.Supreme Suspensions Nitrogen Gas Charged Shocks are engineered for driving enthusiasts who command maximum performance, in the most demanding conditions. A self-compensating heavy-duty nylon-banded full displacement piston and double-welded mounts ensure maximum strength and durability for any type of operation, on or off-road, loaded or unloaded, hauling or cruising, our shock absorbers will instantly react to changing road inputs to maximize ride stability, comfort and control. Note: *Includes Max Performance Shocks for Lifted Applications