2x T6 Billet Aluminum Strut Spacers2x High-Strength Steel Tapered Lift Blocks4x Premium Electrostatic Powder Coated U-Bolts2x Rear Pro Comp PRO-X Twin Tube Shock AbsorbersInstallation Hardware and InstructionsNOTES: ? Front strut spacersĀ are NOT compatible with PRO-4X model. ? Rear kit will work only for models with Spring Over Axle Suspension. Models with Spring UNDER Axle Suspension Setup will need a Shackle Lift Kit. Please check your vehicle's rear suspension setup before ordering. ? This kit includes 9/16" U-bolts and requires enlarging retainer plate holes.Developed and rigorously tested by in-house engineers, our Pro-Billet Series Strut Spacers are precision CNC machined from solid T6 Aircraft-Grade Billet Aluminum and finished with an Anodized Coating for maximum resistance against oxidation and corrosion. Renowned for its sheer strength and light weight, this premium lift material will never compress or warp under even the most excessive loads or extreme riding conditions.For lifting the rear end, we included our NEW US Patent Pending 3-Bend Single Weld Rear Lift Blocks, precision machined from ONE 1/4" thick plate of Steel, 3 times bend and welded using heavy-duty GMAW seam and fillet welding processes to ensure maximum strength and a lifetime of dependability under even the most extreme riding conditions. 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.Pro Comp PRO-X Twin Tube Shocks are also included to improve your vehicle's off-road handling and performance. With their twin tube construction and 10 stage velocity sensitive valving, these shock absorbers are the perfect complement to your lifted vehicle and will deliver a more stable, controlled, and comfortable ride. The large 5/8 inch chrome hardened piston rod and unique Teflon rebound stop delivers a comfortable highway ride and the ability to handle the most demanding driving conditions.*An alignment is always recommended after altering the height of your vehicle.