5-6" 2011-2019 GMC Sierra 2500HD/3500HD - MAX2.1 Lift Kit (w/Falcon 2.1 shocks) by ReadyLift

ReadyLIFT's 42-31540 redefines suspension performance for 2011-2019 GMC Sierra 2500HD / 3500HD trucks with the 5”-6” MAX2.1 Suspension System featuring Falcon 2.1 shocks. Designed to enhance stance, capability, and ride quality, this system includes everything needed to clear larger wheels and tires while delivering a ride that exceeds factory standards. With vehicle-specific, performance-tuned Falcon 2.1 dampers at all four corners, the MAX2.1 Suspension System provides exceptional comfort, control, and versatility for daily driving, off-road adventures, and heavy-duty towing or hauling. The rear shocks feature adjustable 3-position Falcon 2.1 shocks tuned for daily, sport, or work duties.

The 5”-6” MAX2.1 system (Part #42-31540) is built for durability and performance, featuring premium components such as laser-cut, heavy-duty steel cross-members and OE-style cast iron knuckles with precise geometry for optimal alignment. New forged torsion keys with accurate indexing and torsion bar relocation brackets maintain ground clearance while improving the overall driving experience. The system also includes taller cast rear lift blocks, differential drop brackets, CV axle spacers, sway bar end links, bump stop extensions, a heavy-duty steel skid plate, and Falcon Performance Shocks. Engineered for strength and reliability, the ReadyLIFT 5”-6” MAX2.1 Suspension System combines bold styling with superior performance for drivers who demand more from their trucks.

Features and Benefits:

• Vehicle-specific Falcon 2.1 monotube dampers on all four corners for optimized performance.
• Rear shocks feature adjustable 3-position Falcon 2.1 shocks tuned for daily, sport, or work duties.
• Enhanced roll control and low-speed damping for improved handling dynamics.
• Significant improvement in ride quality, offering superior on-road comfort and off-road capability.
• Precision-engineered fitment ensures unobstructed suspension travel and articulation.
• 6061-T6 aluminum alloy shock body, highly resistant to impact and internal damage.
• Smooth-honed shock interior for consistent, long-term performance.
• 3/4” induction-hardened chrome-plated shaft, designed to resist rock damage, corrosion, and shaft buckling.
• Large shaft diameter enables a wider range of adjustments on adjustable shocks.
• The hard-anodized billet piston is crafted from 6061-T6 aluminum for durability and strength.
• 1-piece Teflon bronze piston wear band with integrated O-ring for superior sealing and performance.
• Heavy-duty fabricated steel components, utilizing 3/16″ and 1/4″ thick steel for maximum strength.
• Full-coverage differential skid plate, constructed from durable 3/16″ steel for enhanced protection.
• For precision and heavy-duty performance, laser-cut, CNC-formed, front and rear cross members.
• 5”-6” lift capability, supporting up to 35x12.50 tires with a 20×9” wheel and 0 offset for a bold stance.