CHEVROLET - SST LIFT KITS; SILVERADO 2500HD/3500HD; 2011 - UP ; A-Arm Kit 2WD & 4WD
GMC - SST LIFT KITS; SIERRA 2500HD/3500HD/DENALI; 2007-2011; *Requires the use of 66-7816A (ReadyLIFT® Universal Torsion Key Unloading Tool); Rear coil spacer may be required to achieve a level stance- ** Do not use the supplied shock extensions for this application; A-Arm Kit 2WD & 4WD