Read more 3" Front and 1.5" Rear Lift Kit with Differential Drop Spacers and Axle Shims For Chevy Silverado and GMC Sierra 1500 Our 3" front and 1.5" rear suspension lift for Silverado and Sierra 1500 models gives you a more aggressive look and clears bigger tires. The front spacers and rear blocks in the kit were CNC machined from solid composites of aluminum and received a protective coating to prevent against rust and corrosion. The rear lift block kits install simply and easily by placing the new blocks between your axle and OE leaf pack, and then securing everything together using our provided extended length U-bolts. The differential drop spacers and alignment shims included in this kit will help prevent premature wear on your driveline caused by lifting your vehicle. Please note that the lift size does not equal the spacer thickness (which will be smaller), but once the installation is complete, the spacers will lift the full amount as advertised. Also, rear lift height for Z71 and LTZ models will vary depending on the size of the factory block being replaced. Fitment For 2007 - 2018 Chevrolet Silverado 1500 For 2007 - 2018 GMC Sierra 1500 Drivetrain: 4WD IMPORTANT Will fit 6-lug models only. Will not fit 19+ TraillBoss, AT4 and 2007 Classic models. Will not fit Denali models equipped with ARC Suspension. Will not fit vehicles equipped with MagneRide, Auto-Ride, Air-Ride, Self-Leveling Suspension Systems. Package Contents (x2) Aluminum Strut Spacers (x2) Aluminum Lift Blocks 9/16th Pins (x4) Extended Plated U-Bolts (x2) Axle Shims (x1) Differential Drop Kit Hardware Installation Notes Materials Front Spacers and Rear Blocks - Premium 6061T6 aircraft aluminum Spacers and Blocks with ideal strength and weight. The parts also received a protective coating to prevent rust and corrosion. Extended U-Bolts - Heavy-Duty U-Bolts zinc phosphate coated to offer increased corrosion resistance in harsh environments and extreme weather conditions. Installation All of our bolt-on lift and leveling kits are easy to install and work with your existing factory suspension components. Once lifted, we do recommend getting an alignment to ensure your ride quality. Read more QUALITY-MADE IN USA Designed in Southern CA by a team of engineers with over 50 years of combined experience. We believe quality is the most important aspect in building a kit and that's why each kit is made to specification using material sourced locally. Material is just as important as build quality. SUSPENSION LIFT KIT Our kit is a suspension lift as opposed to a body lift because when building a Lift Kit, we believe it should last for the life of your vehicle. Body lifts do NOT provide underbody clearance, so if you're serious about your vehicle and want a true lift, purchase one of our Suspension Lift Kits. EASY INSTALL Our kits were designed for the Do-It-Yourselfer and the Weekend Warrior. With at least basic knowledge of your suspension, and simple hand tools, our detailed instructions will walk you through the install in just a few hours. You can have your vehicle lifted in a single afternoon! Read more Why lift my vehicle? Lifting your vehicle will provide much better clearance and allow you to install larger tires. This Full Suspension Lift Kit also levels out your ride and achieves a more desirable appearance. Do I need an alignment? Yes, you always require an alignment after you lift your vehicle because you are altering your suspension geometry. Can I install bigger tires with your kit? Yes, you will be able to install bigger tires, but we do recommend checking with your tire shop to confirm fitment before purchasing because not all tires are created equal. Read more