ReadyLIFT Suspension Inc. offers the 3.5" SST Lift Kit (69-35140) for 2011-2019 Chevy and GMC 2500HD trucks, featuring new heavy-duty Xtreme-Duty upper control arms. This affordable, bolt-on lift kit doesn't require permanent truck modifications and includes ultra heavy-duty control arms. The kit raises the front of the truck by up to 3.5 inches using tough fabricated steel upper control arms with 1-ton ball joints and TCT pivot bushings. It's tailored for 2011-2019 2500HD trucks, providing adjustable lift while maintaining factory ride quality through 2500HD-specific ReadyLIFT forged torsion keys. These keys are stronger than stock, uniquely indexed for this kit. CNC-machined differential drop spacers lower the differential for safe factory angle on 4WD models (not used on 2WD). The rear lift includes 2.0" OEM style cast iron lift blocks, u-bolts, and hardware. The kit comes with Falcon 1.1 Monotube Shocks and new tie-rod end assemblies, significantly stronger than factory ones, addressing a common weakness in GM trucks. This kit enhances the truck's stance, supports up to 34" tires, and is exclusively for Single Rear Wheel models. It's not compatible with trucks having factory TOP overload springs (camper package) and requires a specific lift height limit of 27.25" for 4WD (28" for 2WD) measured from the center of the wheel to the fender lip.