2007(New)-2013 GMC Sierra 1500 Front Suspension Lift Kit & Extended Length Pro Comp Shocks 2WD 4WD Front Lift:3.5" the brake proportioning valve will

the brake proportioning valve will no longer read the load properly which could cause very dangerous driving situations upon breaking

6" front spacer

**NOT COMPATIBLE W/ 2013+ TRUCKS WITH THE ACTIVE-LEVEL FOUR-CORNER AIR SUSPENSION

Supreme Suspensions is proud to carry ProComp’s upgraded struts series to replace your factory shocks when you install your lift kit

2007(New)-2013 GMC Sierra 1500 Front Suspension Lift Kit & Extended Length Pro Comp Shocks 2WD 4WD Front Lift:3.5" the brake proportioning valve will2x Front Lift Spacers 2x Front Pro Comp Extended Shocks Installation Instructions IMPORTANT: Fits 6 Lug models ONLY Usable as 1 2" Leveling Kit or Booster Kit Not compatible with DENALI models using ARC (Adaptive Ride Control) suspension (2019 models) Does not work with models equipped with magna ride auto leveling suspensions (Sierra Denali models) Our Pro Billet series strut spacer lift kits are precision engineered from 6061 T6 aircraft aluminum,