2x Front Lift Billet Spacers3x Front Skid Plate Spacers2x Chromoly Uni-Ball Upper Control Arms2x Differential Drop Spacers2x Rear Lift Blocks4x Premium Electrostatic Powder Coated U-BoltsInstallation instructionsIMPORTANT:Will NOT fit 5-Lug models.NOT RECOMMENDED FOR 2017 TRD OFF-ROAD MODELS OR 2018-2020 TRD PRO MODELS An alignment is always recommended after altering the height of your vehicle.Manufactured from lightweight 4130 Chromoly Steel, this set of upper control arms is engineered to optimize front axle alignment and prevent unwanted vibrations on your lifted Toyota. This tubular control arm kit is equipped with zerk fittings to easily grease the included Polyurethane Bushings and Teflon-coated FK 1.25? PTFE-Lined Uni-Ball Bearings to replace the weak factory ball-joint, offering unparalleled strength for heavy-duty or off-road use.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. Our rear lift kits are precision engineered to lift and level your truck. We complete this kit with high grade hardware and extended OEM spec U-bolts. 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.