2x Front Billet Lift Spacers2x Rear Billet Lift Blocks2x Pinion Alignment Shims2x Differential Drop Spacers3x Front Skid Plate Spacers4x Premium Electrostatic Powder Coated U-BoltsInstallation instructions ? Will NOT fit Tundra Rock Warrior and TRD PRO models? Rear Kit is NOT compatible with models equipped with TRD Suspension Package.Our Pro-Billet series full lifts are designed to accurately lift and level your truck for that more aggressive look over stock. Unlike steel struts and blocks that are cut-out and welded together, our Pro-Billet kits are crafted from solid blocks and will not bend or warp when under high stress loads. Our differential shim kit has been specially engineered to help correct the pinion angle of your vehicle back to factory specifications. An incorrect pinion angle can cause driveline vibrations when driving at speeds, and will severely shorten the lifespan of the differential pinion bearing. The differential and skid plate drop kit is highly recommended for 4WD model trucks with independent front suspension. This kit will lower your front differential and skid plate to reduce the excess wear on CV joints and axles while adjusting the skid plate location preventing any damage to your trucks components. Each component of this kit is machined from 6061-T6 aircraft aluminum, then an anodized coating is applied to protect from rusting. We complete this kit with our high grade hardware and extended OEM spec U-bolts keeping you’re parts safe and secure.NOTES: An alignment is always recommended after altering the height of your vehicle.