2020-2024 Duramax 3" SST Lift Kit (69-30300)

Fits

This kit improves stance, performance, and capability for a gnarly ride! Introducing the updated 69-30300 - perfect for 2020-2024 Chevy Silverado and GMC Sierra 2500/3500 HD trucks with torsion keys, rear blocks, and ReadyLIFT's new front inner fender brackets. These additions allow for bigger tires than ever before! 

GM upgraded the look of the new GM HD, along with changes to its torsion bar suspension. ReadyLIFT had to work its magic to create a brand new SST lift kit that fits perfectly with the modified design. This top-notch engineering and manufacturing has resulted in a 3" lift kit that can handle 35" tires with ease. And for those who crave a lifted truck all around, ReadyLIFT created the 69-30300 3"/1" SST Lift Kit. 

Part Number: 69-30300

• 3" Front/ 1" Rear SST Lift Kit
• SST lift-specific Forged Torsion Keys
• Front inner fender bracket to fit larger tires
• Allows for no-trim 20x9 0 offset on a 35x12.50 tire.

Includes:

• FENDER BRACKET HARDWARE KIT QTY 1
• 20 GM HD FR FNDR BRACKET RIGHT QTY 1
• 20 GM HD FR FNDR BRACKET LEFT QTY 1
• HARDWARE KIT FOR 69-30320 QTY 1
• 1" REAR BLOCK QTY 2
• GM HD 1" UBOLT KIT QTY 1
• LASER CUT WASHER QTY 4
• 1/2 INCH DIFF DROP SPACER QTY 8
• TORSION KEY QTY 2

• Estimated Install Time: 6 Hours +/- 1 Hours  (excluding alignment and wheel/tire assembly) 
• Click Here

Notes:

Installation Alignment Note:  Your vehicle may require alignment after product installation. You may incur additional costs to align the vehicle.

Installation Headlamp Aim Note:  In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment after product installation.  You may incur additional costs to adjust the headlamp system.

 Installation Advanced Driver Assistance Systems (ADAS) Note:  If your vehicle is equipped with active or passive safety/collision monitoring and/or assistance/avoidance systems including, but not limited to, camera- or radar/sonar-based systems, check and adjust your vehicle’s systems for proper aim and function after product installation.   In some instances, your vehicle may require OEM dealer service tools and factory-trained technicians to re-calibrate ADAS.  You may incur additional costs to adjust ADAS systems.

SAEJ2492 WARNING: By installing this product, you acknowledge that the suspension of this vehicle has been modified. As a result, this vehicle may handle differently than factory-equipped vehicles. As with any vehicle, extreme care must be used to prevent loss of control or rollover during sharp turns or abrupt maneuvers. Always wear seat belts, and drive safely, recognizing that reduced speeds and specialized driving techniques may be required. Failure to drive this vehicle safely may result in serious injury or death. Do not drive this vehicle unless you are familiar with its unique handling characteristics and are confident of your ability to maintain control under all driving conditions. Some modifications (and combinations of modifications) are not recommended and may not be permitted in your state. Consult your owner's manual, the instructions accompanying this product, and state laws before undertaking these modifications. You are responsible for the legality and safety of the vehicle you modify using these components.

• When setting the torsion key adjustment bolt do not exceed 27” from the wheel center to the fender edge. Exceeding this will overlift the vehicle creating a top-off condition, meaning the suspension has little to no down travel. The result is poor ride quality and premature wear of components.
• Max with trimming: 20x10 -18 offset - 35x12.50.  Some fender well trim variances may be experienced between Silverado and Sierra models.

Recommended tire:

• 20x9 0 offset - 35x12.50 tire
• Max with trimming: 20x10 -18 offset - 35x12.50
  • Silverado and Sierra have different fender well opening sizes - some minor trimming my be required depending on true tire size and design. Max width on stock wheels is 11.5". 

Tire Size Note: ReadyLIFT wheel and tire fitment recommendations are typically based on Wheel Pros wheels and Nitto tires. Due to product differences among tire manufacturers, tire specifications and dimensions including, but limited to, overall diameter, rolling diameter, tread width, aspect ratio, lug pattern, sidewall construction and inflation pressure, will vary meaningfully by tire and wheel manufacturer. Every tire and wheel combination should be test fit prior to installation. Consult your local installer to learn more about the right tire fitment for your application.

Ride Quality Note: 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 10-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.