Rear Lift Kit: Our chassis level kit uses lift blocks and high-strength iron bolts to secure firmly to the leaf springs. The widened blocks increase surface contact for added security and stability Heavy-Duty Build: The front strut spacer chassis leveling lift kit is crafted from forged 6061-T6 aluminum alloy with an anodized finish for enhanced corrosion resistance and durability. It delivers safe, stable performance even in extreme conditions Easy Installation: The leveling kit is CNC-machined for high precision and accurate alignment with suspension hole position. Simplifies installation and ensures tight fit. 4-wheel alignment is recommended after setup for optimal performance 3-Inch Front & 2-Inch Rear Lift: Our level kit includes two strut spacers, two U-bolts, two lift blocks, and high-strength bolts to raise the front and rear chassis. Spacer thickness isn't actual lift height—final lift varies by suspension geometry Wide Compatibility: This leveling lift kit fits 2007-2023 Silverado 1500 2WD/4WD, 2007-2023 Sierra 1500 2WD/4WD. It precisely matches OEM structure