2020-2024 Duramax 6" MAX 2.1 Lift Kit w/ Falcon 2.1 Shocks (42-30640)

Fits

Upgrade your Duramax with ReadyLift's 6" MAX 2.1 lift kit. Engineered to improve stance, performance, and capability, this kit includes everything necessary to conquer any terrain with precise suspension control and articulation.

Part Number: 42-30640

• HD 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 cross members
  
• 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
• Optimized fitment for unobstructed suspension travel and articulation
• 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
• A 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 w/ O-ring

Includes:

• HD welded steel cross members
• Heavy Duty iron knuckles
• Cast iron rear lift blocks with integrated bump stop landing pads
• HD skid plate
• Assorted hardware and accessories
• x4 Falcon 2.1 Monotube Shocks

Tire Fitment

• 37" Maximum tire diameter
• 37x12.50 for no rub on a 9" wide wheel with 0 offset
• 37x12.50 with a 20×9” with a 0 offset wheel

•  Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT.
• Some GM HD trucks equipped with a 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.

• ReadyLIFT Suspension Inc. and/or Dirty Diesel Customs are NOT responsible for any damage or failure resulting from improper installation.  
  
• Click Here to view installation instructions