Installation Time
(approx) a Day
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
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ReadyLIFT 6-Inch MAX2.1 Suspension Lift Kit with Falcon 2.1 Monotube Shocks (20-26 Sierra 2500 HD)Find parts that fit my vehicle
Item HG42319
Our Price
$3,359.95 kit
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$168.00 Available in AT Cash Rewards.
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- 6" Lift Kit for GM 2500HD and 3500HD 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 and Rear Drop Crossmembers
- Fits 37x12.50 Tires on 20x9 Wheels with 0 Offset
- Vehicle-Specific Performance-Tuned Falcon 2.1 Monotube Dampers on All Four Corners
- Improved Dynamic Roll Control and Low-Speed Damping
- Dramatic Improvement in On-Road Comfort and Off-Road Performance
- 6061-T6 Aluminum Alloy Shock Body Resists Impact to Protect Internal Components
- Smooth-Honed Internal Shock Body Surface for Long-Term Performance
- 3/4" Induction Hardened Chrome Plated Shaft Resists Rock Damage, Corrosion, and Shaft Buckling
- Large Shaft Diameter Provides a Wide Range of Adjustments on Adjustable Shocks
- Hard Anodized 6061-T6 Aluminum Alloy Billet Piston
- 1-Piece Teflon Bronze Piston Wear Band with O-Ring
- Heavy Duty Welded Steel Crossmembers
- Heavy Duty Iron Knuckles
- Cast Iron Rear Lift Blocks with Integrated Bump Stop Landing Pads
- Heavy Duty Skid Plate
- Assorted Hardware and Accessories
- Includes 4 Falcon 2.1 Monotube Shocks
- Some Trucks Equipped with Tow Package May Require Custom-Length U-Bolts Purchased Separately
- Fits 20-26 Sierra 2500 HD - Does Not Fit AT4X Or ZR2 Models, Single Cab Configuration Not Validated For Fitment & Drivability
| Brand | ReadyLIFT |
| Lift Height | 6.00 Inch |
| Lift Kit Type | Suspension Lift |
| Lift Kit Max Tire Size | 38 Inch |
| Brand of Shocks | Teraflex |
| Shock Style | Non-Reservoir |
Description
Suspension Lift Performance. The ReadyLIFT 6-Inch MAX2.1 Suspension Lift Kit with Falcon 2.1 Monotube Shocks enhances vehicle height and suspension capability, delivering improved off-road performance and on-road comfort. It is specifically engineered for GM 2500HD and 3500HD trucks to provide superior handling, dynamic roll control, and optimized suspension travel.
Construction and Appearance. Constructed using heavy-duty fabricated steel components including 3/16" and 1/4" steel plates, the system incorporates laser-cut, CNC-formed crossmembers and a full-coverage differential skid plate for durability. The Falcon 2.1 shocks feature 6061-T6 aluminum alloy bodies with hard anodized pistons and induction-hardened chrome shafts for corrosion and impact resistance, ensuring long-lasting performance and rugged aesthetics.
Installation. Installation requires approximately 12 hours, excluding alignment and wheel and tire assembly. Some trucks equipped with tow packages may require custom-length U-bolts, which must be purchased separately.
Application. Designed to fit 2020-2026 Sierra 2500 HD models, the kit is not compatible with AT4X or ZR2 trims and has not been validated for single cab configurations.
ReadyLIFT 42-30640
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- Welded Steel Crossmembers
- Iron Knuckles
- Cast Iron Rear Lift Blocks
- Bump Stop Landing Pads
- Heavy Duty Skid Plate
- Falcon 2.1 Monotube Shocks
- Installation Hardware
Tech Guides:
- Lift Kit vs Leveling Kit: Which Upgrade Is Right for Your Truck?
- How Much Lift Does My Truck Need? Picking the Right Lift Height
- Pros and Cons of Lifting Your Truck: What Every Owner Should Know
- Towing Suspension Upgrades: Suspension Components to Improve Towing Capability
- Lift Kits - How Adding Ground Clearance Makes Trucks More Capable Off-Road
- Do Lifted Trucks Use More Fuel? MPG Loss by Lift Height, Tire Size, and How to Save
- What Is Rake? How Leveling Your Truck Improves Appearance
- FAQ What Are The Best Suspension Systems? How Suspension Systems Work
- Off-Road Suspension 101: What To Know Before You Go
- Lift Kits vs. Leveling Kits: What’s the Difference?
- 8 Most Popular Rides to Upgrade Suspensions in 2021
4.8
Customer Reviews (139)
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