4.5" Front Lift Spindle Knuckles for Chevy Silverado 1500 GMC Yukon 2WD 07-17

For Chevy Silverado 1500 2007-2017 2WD only (Fits CAST Arms only - Does not fit Aluminum or Stamped Arms). For GMC Yukon 2007-2014 2WD only. For GMC Yukon XL 2007-2014 2WD only. For GMC Sierra 1500 2007-2017 2WD only (Fits CAST Arms only - Does not fit Aluminum or Stamped Arms).