2x Front Billet Lift Spacers2x Rear Steel Tapered Lift Blocks4x Square Bend U-BoltsHigh-Strength Installation HardwareInstallation InstructionsPrecision CNC Machined for Outstanding Performance and QualityProfessional Protective Coating to Prevent Oxidation & RustAllows for Installation of Plus Sized TiresIMPORTANT:* 4WD MODELS COME WITH A 1.5" FACTORY BLOCK INSTALLED, WHICH WILL BE REPLACED BY OUR 3" LIFT BLOCK RESULTING IN A 1.5" ADDITIONAL REAR LIFT.?Please check out our installation video:We are proud to offer you our High End Leveling Lift Kit are made out of Aluminum Components and Steel. Front Spacers are precision CNC machined from T6 Aircraft Aluminum, then Anodized for a superior corrosion resistant finish. The SOLID single-piece construction ensures extreme compression resistance, while still being light-weight and resistant to typical corrosion associated with off-roading. Developed and rigorously tested by in-house engineers, our blocks are precision machined from 1-piece CNC formed steel frame using heavy-duty GMAW seam and fillet welding processes. Our Heavy Duty Steel rear blocks are constructed with dual pins specific for the F-150 models and a 1/4" Thick CNC Plasma Cut Center Support Structure to ensure stability, perfect fitment and easy installation. These Blocks are fabricated with Built-In Tapper to Optimize Pinion Angles and preserve stock ride quality. We complete this kit with our newly designed set of U-bolts, ISO 9001 certified and stamped to satisfy the highest quality control standards. Note: Please be sure to check with your local DMV before you purchase the 3" rear lift for your 4WD model, as it is illegal in some states to stack rear blocks. An alignment is always recommended after altering the height of your vehicle.