This lift kit will raise your Silverado or Sierra by a true 3" in the front and 1" in the rear. Can be installed in about 2-3 hours and does not require strut/coil disassembly like other kits. The front spacers are CNC machined out of billet aluminum and then powdercoated black to match you factory suspension. For the rear the kit comes with new fabricated rear lift blocks and longer U bolts. Fabricated lift blocks will out last cast iron and will far outlast solid aluminum rear lift blocks. The rear lift blocks are also powdercoated for a long lasting finish. This kit is the strongest on the market and come with a 100% satisfaction guarantee and a lifetime warranty. It will come to you complete with all the hardware and instructions. All MotoFab lifts products are proudly made in the USA with USA sourced materials! Please note: Lift spacer thickness and lift is not a 1 to 1 ratio due to the suspension geometry.