ReadyLIFT Suspension Inc. introduces the 3.5" SST Lift Kit tailored for 2011-2019 Chevy and GMC 2500HD trucks, now featuring our robust Xtreme-Duty upper control arms. This premium lift solution offers a cost-effective, non-permanent truck modification. It's a genuine bolt-on Lift kit, complemented by our heavy-duty control arms. The 69-3513 SST Lift Kit by ReadyLIFT elevates the front of your HD truck by a maximum of 3.5 inches. Included are heavy-duty steel upper control arms with 1-ton ball joints and maintenance-free TCT pivot bushings, matching your truck's strength. For adjustable lift without compromising the factory ride, our kit includes 2011-2019 2500HD-specific ReadyLIFT forged torsion keys, boasting superior strength and unique indexing. 4WD trucks benefit from CNC-machined differential drop spacers, ensuring safe front CV axle angles. Rear lift for your Chevy Silverado 2500HD is achieved with OEM style 1.0" cast iron rear lift blocks, complete with new u-bolts and hardware. We also offer a Tow Package version with 2.0" rear lift blocks (69-3514). This kit includes SST3000 Shocks and super-strong tie-rod end assemblies to replace the weak factory versions, addressing a historical GM truck weak point. With attention to detail unrivaled by other lift kits for GM HD trucks, this kit provides an impressive raised stance and accommodates up to 34" tall tires. Please note that it's suitable for Single Rear Wheel trucks only and not for those with factory TOP overload springs (camper package). Lift height should not exceed 27.25" for 4WD and 28" for 2WD vehicles when measured from the center of the wheel to the fender lip above the 12 o'clock position.