Search by Vehicle

8'' MAX3.3 Suspension System W/ Falcon 3.3 Shocks And Fab UCA Arms - 2020-2024 GM Silverado / Sierra 2500HD/3500HD

$4,499.95
In stock
SKU
42-30840

- 8" Lift Kit GM HD Trucks

- Heavy-duty fabricated steel components utilizing 3/16″ and 1/4″ steel plate

- Full-coverage differential skid plate constructed from 3/16″ steel plate

- Laser cut, CNC formed heavy-duty front/rear drop crossmembers.

- Allow up to 37x12.50 with a 20×9” with a 0 offset wheel

- Xtreme-Duty fabricated 4130 chromoly steel upper control arms

- 3.3 Fast Adjust Dampers offer a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference. 

- 3-Position Fast Adjust Knob for Soft, Custom, and Firm Compression. Soft mode allows a partial bypass of the main piston for a softer ride

- 8-Position Micro Adjust Dial offers refined damping adjustments

- Reservoir design increases nitrogen to oil ratio for consistent damping over wide temperature ranges.


See Details for Notes on Tow Package Compatibility.

Note:  Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT.   

Have a question? Please call 800-549-4620

TIRE/WHEEL SIZING GUIDE

California Residents: Prop 65 WARNING prop65 Cancer, Birth Defects and Reproductive Harm www.P65Warnings.ca.gov
  • ReadyLIFT delivers a performance game changer for the popular 2020-2024 Chevy Silverado and GMC Sierra 2500/3500 HD trucks with the release of our new premium 8” MAX3.3 Suspension with 3.3 Falcon shocks. Designed to improve stance, performance, and capability, this kit includes everything necessary to clear larger wheels and tires. With vehicle-specific performance-tuned Falcon dampers on all four corners of our kit, these lift kits provide a better-than-factory feel.  The 8” kit includes a new system that pairs front 3.3 Fast Adjust shocks with rear adjustable piggyback shocks. The new 3.3 Falcon’s are Fast Adjust Dampers offering a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference. Falcon Performance Shocks improve performance and comfort regardless of the terrain. The versatility of these systems makes them ideal for daily driving, off-road excursions, and tow/haul duties.


    These new kits include laser-cut, fabricated heavy-duty steel cross-members, new cast iron OE-style knuckles with the perfect geometry built-in, torsion arm brackets, taller cast style rear lift blocks, new forged torsion keys with the proper amount of indexing, and the 8” includes our popular fabricated steel upper control arms with corrected ball joint angles. These new torsion bar relocation brackets eliminate the traditional lowering of the torsion bars, which can inhibit ground clearance and help to improve the overall driving experience. Additionally, each kit includes crucial differential drop brackets and CV axle spacers, sway bar end links, bump stop extensions, OE style cast rear lift blocks, heavy-duty steel skid plate, and finally, Falcon shocks. 


    - 8" Lift Kit GM HD Trucks

    - Heavy-duty fabricated steel components utilizing 3/16″ and 1/4″ steel plate

    - Full-coverage differential skid plate constructed from 3/16″ steel plate

    - Laser cut, CNC formed heavy-duty front/rear drop crossmembers.

    - Allow up to 37x12.50 with a 20×9” with a 0 offset wheel

    - Xtreme-Duty fabricated 4130 chromoly steel upper control arms

    - 3.3 Fast Adjust Dampers offer a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference. 

    - 3-Position Fast Adjust Knob for Soft, Custom, and Firm Compression. Soft mode allows a partial bypass of the main piston for a softer ride

    - 8-Position Micro Adjust Dial offers refined damping adjustments

    - Reservoir design increases nitrogen to oil ratio for consistent damping over wide temperature ranges. 

    - Hard Anodized Large Bore 6061-T6 Aluminum Shock Body for impact and corrosion resistance as well as increased oil volume for consistent performance.  

    - VOD (Volume Optimized Damping) features a digressive linear piston for quicker ramp-up for reduced body roll and an overall increase in damping to reduce bottom out when pushed to the limit.

    - Red Line high VI shock oil for consistent performance across all temperatures from -50F to 450F with anti-wear and lubricity agents. 


    NOTE:  Some GM HD trucks equipped with Tow Package may require custom-length U-bolts purchased separately. Custom U-bolt length may vary by vehicle application.  If the ReadyLIFT kit's standard U-bolts are too short, ReadyLIFT recommends locally sourcing custom U-bolts built to each truck's specifications.
  • 38" Maximum tire diameter

    38x12.50 for no rub on a 9" wide wheel with 0 offset

    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.

  • Heavy Duty welded steel crossmembers

    Heavy Duty iron knuckles

    Cast iron rear lift blocks with integrated bump stop landing pads.

    forged torsion keys with the proper amount of indexing

    Heavy duty skid plate.

    Assorted hardware and accessories

    Includes 4 Falcon 3.3 Shocks.

  • 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.

     

    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.


    DO IT YOURSELF: Please read Instructions thoroughly and completely before beginning installation. Installation by a certified mechanic is recommended. ReadyLIFT Suspension Inc. is NOT responsible for any damage or failure resulting from improper installation. Download Pdf Instructions
    Estimated Installation Time: 12 Hours +/- 1 hour (excluding alignment and wheel/tire assembly)

    Have a certified mechanic do it for you!

  • California Residents: Prop 65 WARNING prop65 Cancer, Birth Defects and Reproductive Harm www.P65Warnings.ca.gov

Quick Overview

- 8" Lift Kit GM HD Trucks

- Heavy-duty fabricated steel components utilizing 3/16″ and 1/4″ steel plate

- Full-coverage differential skid plate constructed from 3/16″ steel plate

- Laser cut, CNC formed heavy-duty front/rear drop crossmembers.

- Allow up to 37x12.50 with a 20×9” with a 0 offset wheel

- Xtreme-Duty fabricated 4130 chromoly steel upper control arms

- 3.3 Fast Adjust Dampers offer a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference. 

- 3-Position Fast Adjust Knob for Soft, Custom, and Firm Compression. Soft mode allows a partial bypass of the main piston for a softer ride

- 8-Position Micro Adjust Dial offers refined damping adjustments

- Reservoir design increases nitrogen to oil ratio for consistent damping over wide temperature ranges.


See Details for Notes on Tow Package Compatibility.

Note:  Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT.   

Details

ReadyLIFT delivers a performance game changer for the popular 2020-2024 Chevy Silverado and GMC Sierra 2500/3500 HD trucks with the release of our new premium 8” MAX3.3 Suspension with 3.3 Falcon shocks. Designed to improve stance, performance, and capability, this kit includes everything necessary to clear larger wheels and tires. With vehicle-specific performance-tuned Falcon dampers on all four corners of our kit, these lift kits provide a better-than-factory feel.  The 8” kit includes a new system that pairs front 3.3 Fast Adjust shocks with rear adjustable piggyback shocks. The new 3.3 Falcon’s are Fast Adjust Dampers offering a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference. Falcon Performance Shocks improve performance and comfort regardless of the terrain. The versatility of these systems makes them ideal for daily driving, off-road excursions, and tow/haul duties.


These new kits include laser-cut, fabricated heavy-duty steel cross-members, new cast iron OE-style knuckles with the perfect geometry built-in, torsion arm brackets, taller cast style rear lift blocks, new forged torsion keys with the proper amount of indexing, and the 8” includes our popular fabricated steel upper control arms with corrected ball joint angles. These new torsion bar relocation brackets eliminate the traditional lowering of the torsion bars, which can inhibit ground clearance and help to improve the overall driving experience. Additionally, each kit includes crucial differential drop brackets and CV axle spacers, sway bar end links, bump stop extensions, OE style cast rear lift blocks, heavy-duty steel skid plate, and finally, Falcon shocks. 


- 8" Lift Kit GM HD Trucks

- Heavy-duty fabricated steel components utilizing 3/16″ and 1/4″ steel plate

- Full-coverage differential skid plate constructed from 3/16″ steel plate

- Laser cut, CNC formed heavy-duty front/rear drop crossmembers.

- Allow up to 37x12.50 with a 20×9” with a 0 offset wheel

- Xtreme-Duty fabricated 4130 chromoly steel upper control arms

- 3.3 Fast Adjust Dampers offer a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference. 

- 3-Position Fast Adjust Knob for Soft, Custom, and Firm Compression. Soft mode allows a partial bypass of the main piston for a softer ride

- 8-Position Micro Adjust Dial offers refined damping adjustments

- Reservoir design increases nitrogen to oil ratio for consistent damping over wide temperature ranges. 

- Hard Anodized Large Bore 6061-T6 Aluminum Shock Body for impact and corrosion resistance as well as increased oil volume for consistent performance.  

- VOD (Volume Optimized Damping) features a digressive linear piston for quicker ramp-up for reduced body roll and an overall increase in damping to reduce bottom out when pushed to the limit.

- Red Line high VI shock oil for consistent performance across all temperatures from -50F to 450F with anti-wear and lubricity agents. 


NOTE:  Some GM HD trucks equipped with Tow Package may require custom-length U-bolts purchased separately. Custom U-bolt length may vary by vehicle application.  If the ReadyLIFT kit's standard U-bolts are too short, ReadyLIFT recommends locally sourcing custom U-bolts built to each truck's specifications.
Tire Fitment

38" Maximum tire diameter

38x12.50 for no rub on a 9" wide wheel with 0 offset

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.

Kit Components

Heavy Duty welded steel crossmembers

Heavy Duty iron knuckles

Cast iron rear lift blocks with integrated bump stop landing pads.

forged torsion keys with the proper amount of indexing

Heavy duty skid plate.

Assorted hardware and accessories

Includes 4 Falcon 3.3 Shocks.

Installation

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.

 

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.



DO IT YOURSELF: Please read Instructions thoroughly and completely before beginning installation. Installation by a certified mechanic is recommended. ReadyLIFT Suspension Inc. is NOT responsible for any damage or failure resulting from improper installation. Download Pdf Instructions
Estimated Installation Time: 12 Hours +/- 1 hour (excluding alignment and wheel/tire assembly)

Have a certified mechanic do it for you!

Additional Information
California Residents: Prop 65 WARNING prop65 Cancer, Birth Defects and Reproductive Harm www.P65Warnings.ca.gov
Warning: This product can expose you to chemicals include [name of chemical], which [is/are] known to the State of California to case [cancer]/[birth defects or other reproductive harm]. For more information go to www.P65Warnings.ca.gov.