2011-2019 GM HD 3.5" SST Lift Kit Front 2 Rear Upper Control Arms (69-3422)The ReadyLIFT 3. 5 inch Front 2 inch Rear SST Lift Kit for 2011 2019 GM Silverado Sierra 3500 HD trucks is a comprehensive bolt on suspension system designed for Dual Rear Wheel (DRW) and Single Rear Wheel (SRW) models with factory tow package springs. This kit features heavy duty tubular steel upper control arms and forged torsion keys indexed specifically for 3. 5 inches of front lift. By including critical steering and drivetrain corrections, such