2011-2019 GM 2500 HD 2wd/4wd 3.5" front / 2" rear SST lift kit Allows for up to 34" tall tires. Includes heavy-duty fabricated steel upper control arms. Best value for a premium 3.5" SST Lift kit 2" rear block gives more rear rake than 1" rear block Forged Torsion Keys SST3000 Shocks Will not deform or change shape No Cutting of OEM Parts or Welding Maintains Factory Ride If it needs it‚¬¦ Its in the box