2x T6 Billet Aluminum Strut Spacers2x High Strength Steel Rear Lift Blocks4x Premium Electrostatic Powder Coated U-Bolts2x Rear Supreme Suspensions MAX Performance Shocks2x Premium Silicone Blend Shock BootsInstallation HardwareInstallation InstructionsNotes:? Does NOT Fit Nissan Titan XD.? 3" Front Lift Spacers are NOT compatible with PRO-4X models.Please check out our installation video:Developed and rigorously tested by in-house engineers, our Pro-Billet Series Strut spacers are meticulously engineered and precision CNC machined from T6 Aircraft Aluminum, then Anodized for a superior corrosion resistant finish. Billet Aluminum is premium choice material to use when leveling your truck thanks to the SOLID single-piece construction which yields extreme compression resistance, while still being light-weight and resistant to typical corrosion associated with off-roading.For lifting the rear end of your pickup truck we included our Rear Lift Blocks and U-Bolts Kit. Our lift block kits are designed to be installed simply and easily by placing the new blocks between your axle and OE leaf pack, and then securing everything together using the High-Strength Steel U-Bolts, bent & threaded to exact specifications, and finished with an Electrostatic Powder Coating to ensure the maximum level of protection and corrosion resistance.We are proud to introduce our own Supreme Suspensions branded line of shock absorbers designed to better accommodate our lift kit and provide improved suspension travel and comfort. 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.*An alignment is always recommended after altering the height of your vehicle.