HHCSOP 2" Rear Lift Block Kits / 2 inch Rear Leveling Kit Compatible Vehicles: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 Chevy Silverado 1500 2WD/4WD Rear Lift Block Kits 2007-2019 GMC Sierra 1500 2WD/4WD Rear Lift Block Kits 2019 ONLY old body style Package includes: 2x Rear Lift Block 4x Extended U-Bolts 1x Installation Hardware Important Notes: 1. Due to suspension geometry, the ratio between lift height and kit thickness is not 1:1. 2. Before driving the vehicle,making sure ALL hardware are torqued to factory specs. 3. After installing the kit,the truck needs to be aligned back to factory spec.