2x Front Lift Spacers2x Rear Lift Shackles2x Extended Bump StopsInstallation instructions*Pro4X Model will NOT fit 3" or 3.5" Front SpacerPlease 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 compared to many other metals on the market. Unlike steel kits that are cut-out and welded together, our Pro-Billet kits are machined from a solid piece and will not bend or warp under even the most stressful conditions. Supreme Suspension heavy duty steel lift shackles have been designed to lift your trucks rear-end 2" over stock. CNC machined from high-strength steel and coated to protect from corrosion in even the roughest conditions. NOTES: An alignment is always recommended after altering the height of your vehicle.