ReadyLIFT is thrilled to introduce a heavy-duty suspension lift option for 2020-2022 Chevy Silverado and GMC Sierra 2500/3500 HD trucks including the AT4 package. General Motors' updates to the torsion bar suspension necessitated the engineering of a new SST lift kit by ReadyLIFT tailored for this redesigned suspension. This innovative 3" SST lift kit system accommodates 35" tires comfortably. Specifically for those seeking an all-around lift for their 2020-2021 GM HD truck the 69-3030 3"/2" SST Lift Kit is offered. It delivers 3" of adjustable front lift through specialized forged torsion keys distinct from those in the 66-3020 kit. The kit includes taller differential drop spacers skid plate spacers extended bump stops rear shock extensions and OE style cast iron 2" tall rear lift blocks with longer U-bolts. It is compatible with trucks equipped with either OE #84461807 or OE #84634344 factory torsion keys and necessitates the use of ReadyLIFT torsion key unloading tool 66-7822B or equivalent for installation. Additionally it can be used on trucks with factory snow prep/plow packages. The ReadyLIFT 2020 GM HD SST Lift Kits are chosen for their ability to maintain the factory ride and handling. They boast industry-leading forged torsion keys with specific indexing for each application. These kits provide clearance for larger aftermarket tires up to 35" and include CNC machined billet Aluminum differential drop spacers with extended hardware to ensure proper CV angles and driveline geometry. The factory skid plate remains usable thanks to new skid plate spacers. Each SST lift kit includes 2" tall OE style cast iron tapered rear lift blocks and heavy-duty rear shock extensions to eliminate the need for purchasing new rear shocks. To correctly limit suspension compression the kit comes with four taller bump stops. Importantly every kit includes the ReadyGuard Powertrain Warranty.