<b>***KSP Performance ***</b></P><b>Fitment:</b></P>For 2007-2018 Silverado 1500 2WD/4WD<br> For 2007-2018 GMC Sierra 1500 2WD/4WD</P><b>Brand story</b></P>KSP Performance rear tapered lift block kit will lift the rear of the truck 1-3 '' according to your truck mode and our application.<br> Our block offers a superior lifted experience and maintain the factory ride quality.<br> It can increase ground clearance; Levels the front with the rear, particularly when using a front leveling kit. <br>Fit larger rims and tires. IT will be a Perfect solution for towing and hauling. Our Fabricated Steel block kit is lighter and stronger than casting block in the market. <br>Solid aluminum rear lift blocks are light but not strong enough for offroad. Our Internal Reinforced cross design ensure stronger support than other sellers. <br>The extended U bolts are made of high quality alloy steel with heat treatment to reach grade 8-150000 psi yield. <br>It is much stronger than OE grade 4.5. Thread Pitch of our U bolts is 9/16'', not 14X1.5 from many sellers. 20mm height nuts and 3mm thick washers to support high torsion.<br> Powder coated and zinc plated finished for long lasting.All of our updated technology and service to provide Lifetime Warranty and 100% Customer Satisfaction Guarantee.</P><b> PLEASE NOTE: </b></P>The height of our tapered block kit marked is actual size, Not always is same with lift height. It will be changed according to the factory block height. For example, the factory block height is 1’’, the truck will be lifted additional 2’’ if use our 3’’ block kit. 3’’ lifting will be gained if have no factory block. Please feel free to contact us if you could not confirm it before purchasement. Also welcome to purchase our front leveling lift kits to complete your lift solution.