ReadyLift 3"F / 2"R SST Lift Kit- GM Silverado / Sierra 2500HD 2020-2021

  • ReadyLift 3"F / 2"R SST Lift Kit- GM Silverado / Sierra 2500HD 2020-2021
  • ReadyLift 3"F / 2"R SST Lift Kit- GM Silverado / Sierra 2500HD 2020-2021
  • ReadyLift 3"F / 2"R SST Lift Kit- GM Silverado / Sierra 2500HD 2020-2021
  • ReadyLift 3"F / 2"R SST Lift Kit- GM Silverado / Sierra 2500HD 2020-2021
MSRP: $516.32
(You save $66.37 )


ReadyLIFT® is excited to offer a new heavy-duty suspension lift option for the 2020-2021 Chevy Silverado and GMC Sierra 2500/3500 HD trucks including the popular AT4 package. Along with the outward appearance changes to the new GM HD, General Motors also made changes to the long-standing torsion bar suspension. These changes required ReadyLIFT to engineer a new  SST lift kit that is specifically designed to function and install properly on this new suspension design. Our dedication to professional engineering and manufacturing has yielded a new 3" SST lift kit system that comfortably allows for 35" tires.

For those who want a lifted stance all the way around on their new 2020-2021 GM HD truck, we offer the 69-3030 3"/2" SST Lift Kit. This system provides 3" of adjustable front lift with new forged torsion keys specialized for this 3" front lift (not the same keys found in 66-3020). Taller differential drop spacers and skid plate spacers are included, as well as new taller bump stops, rear shock extensions and our popular OE style cast iron 2" tall rear lift blocks with new longer U-bolts. The 69-3030 SST lift kit works with trucks equipped with either the OE #84461807 or OE #84634344 factory torsion keys and requires ReadyLIFT torsion key unloading tool 66-7822B or similar for installation.

Can be used on trucks equipped with factory snow prep/plow packages.

Why Choose ReadyLIFT 2020 GM HD SST Lift Kits?

Maintains the factory ride and handling.

Features industry-leading forged torsion keys with specific indexing designed for each application.

Delivers clearance for increased aftermarket tire sizes - up to 35''

Kits include important CNC machined billet Aluminum differential drop spacers with longer hardware to ensure correct CV angles and drive line geometry.

Maintains use of the factory skid plate via new skid plate spacers.

SST lift kit includes 2" tall OE style cast iron tapered rear lift blocks.

SST lift kit includes new heavy-duty rear shock extensions are included so you don't have to buy new rear shocks.

New taller (4) bump stops are included with the SST lift kit to properly limit suspension compression.

Every kit includes ReadyGuard Powertrain Warranty.


20x9 0 offset - 35x12.50 tire.

*Max with trimming: 20x10 -18 offset - 35x12.50

Note: Silverado and Sierra have different fender well opening sizes - some minor trimming my be required depending on true tire size and design.

When lifting a vehicle and installing aftermarket wheels and tires, a tire manufacturer's construction and material quality can alter vehicle ride quality. When increasing a vehicle wheel and tire size, most larger aftermarket truck and SUV tires are 8-ply (or more) E tires compared to typical OEM 6-ply C tires. This more rigid sidewall construction increases the perception of suspension stiffness often described as ride harshness. The ride, handling, traction, noise, fuel economy, and wear differences between All-Season, All-Terrain, Mud-Terrain, or Trail-Terrain type tires can be significant. Please take into account tire and wheel choice will generally have a meaningful impact on the ride & handling experience.


Torsion Key Qty 2

Front Shock Spacer Qty 4

Extended Front Bump Stop Qty 4

Differential Spacers Qty 4

Heavy Duty Differential laser cut washes Qty 4

Skid Plate Spacers QTY 4

Replacement Front Shock flange nuts Qty 4

Extended Differential mounting bolts Qty 4

Extended Skid Plate mounting bolts Qty 4

Heavy duty Skid Plate washers Qty 4

Rear Shock Extensions

2" Rear Block Qty 2

Extended U-bolt Qty 4

U-bolt flange nuts Qty 8

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