2x Front Lift Billet Spacers2x Rear Lift Blocks4x Premium Electrostatic Powder Coated U-Bolts2x Compressor Tool Installation instructionsIMPORTANT: 3" or 3.5" FRONT SPACER WILL NOT FIT PRO4X MODELPlease check out our installation video:Our Pro-Billet series strut spacer lift kits are precision engineered from 6061-T6 aircraft aluminum, then anodized for a superior finish. Billet aluminum is a great material for use in suspension applications as it has an immensely high strength to weight ratio along with a superior level of corrosion resistance . Our rear lift kits are precision engineered to lift and level your truck. The rear lift blocks are machined from steel, then an anodized coating is applied to protect from rusting. We complete this kit with high grade hardware and extended OEM spec U-bolts.NOTES: An alignment is always recommended after altering the height of your vehicle.