The MaxxStak Adjustable 2.5 inch Leveling Lift Kit for 2007 -2017 GM ½ ton trucks and 2006 and up GM ½ ton SUVs. Picking up where their tremendously popular MAXX Cams left off, Suspension MAXX MaxxStak GM leveling kit is the perfect way to add 1.5 2, 2.25, or the MAXX 2.5 of front end lift to all 4X4 and 2wd Silverado's ,Sierras, Avalanches, Tahoe's, Yukon's, Suburban's, Escalades, and more! Super lightweight and ultra-durable, the MaxxStak spacers are manufactured form Solid Alloy Steel and impact resistant strut shims, making them not only tough, but corrosion resistant to last the life of the truck. 100% American made. Covered under the MAXX Warranty.