2x Front Lift Billet Spacers2x Rear Poly Lift Spacers2x Differential Drop Spacers and Bolts2x Front Skid Plate Spacers and BoltsInstallation instructionsOur 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. Our rear spring spacers are injection molded from ultra-high density urethane, and impregnated with special conditioners to never dry or rot. These spacers have proven time and again to provide customers with the fastest, most hassle-free install, while maintaining your smooth factory ride quality. Our Differential Drop Kit is highly recommended for 4WD model trucks with independent front suspension. This kit will lower your front differential and reduce the excess wear on CV joints and axles by correcting the driveline angle changes caused by lifting the front of your truck. Machined from billet aluminum, these spacers will never compress, making sure your diff stays put and always in the right location. This is a perfect complement for trucks with lift kits from any of our product lines, as well as vehicles with pre-existing coil spring spacer lift kits installed. With our skid plate spacer kit, you can forget about any problems with contact being made between the plate and any of your new or modified suspension components. These are machined from the same material stock as our Pro-Billet series of products so you know they?re strong, designed to take a beating along with your skid plate to help protect your vital components. These skid plate spacers will never compress, crack, deform or break, and provide you with the extra clearance you need.NOTES: An alignment is always recommended after altering the height of your vehicle.