The rear Lift kits you receive from MotoFab Lifts are fabricated in the USA out of high grade steel for many popular GMC and Chevrolet pickup trucks. We have kits that fit Silverado 1500, Sierra 1500, GMC Yukon, Chevrolet avalanche, Chevrolet Tahoe and Suburban. All Silverado 1500 and Sierra 1500 rear lift kits come with new longer rear U-bolts that are made in the USA and include grade 8 hardware. The GMC Yukon, Chevrolet avalanche, Chevrolet Tahoe and Suburban that we manufacturer are made out of 6061 Billet aluminum and then texture black powdercoated to provide years of corrosion free use.