2011-2019 GM HD 5-6" MAX 2.1 Lift Kit w/ Falcon Shocks (42-31540)

The ReadyLIFT 5-inch to 6-inch MAX 2.1 Suspension System is a performance game changer for 2011-2019 Chevy Silverado and GMC Sierra 2500/3500 HD trucks. This system is designed to improve stance, performance, and capability while providing a better-than-factory feel thanks to the vehicle-specific performance-tuned Falcon 2.1 monotube dampers on all four corners. The kit provides adjustable lift from 5 inches to 6 inches, making it ideal for daily driving, off-road excursions, and tow/haul duties.

Features

• Provides 5 to 6 inches of adjustable lift.
• Includes four vehicle-specific performance-tuned Falcon 2.1 monotube dampers.
• Offers dramatic improvement in on-road comfort and off-road performance.
• Features heavy-duty fabricated steel components utilizing 3/16-inch and 1/4-inch steel plate.
• Includes laser-cut, CNC formed heavy-duty front and rear drop crossmembers.
• Comes with a full-coverage differential skid plate constructed from 3/16-inch steel plate.
• Utilizes new cast iron OE-style knuckles with perfect geometry built-in.
• Includes new forged torsion keys for proper indexing and taller cast style rear lift blocks.
• Includes differential drop brackets and CV axle spacers, which eliminate the need for extended CV axles.
• Features a 3/4-inch induction hardened chrome plated shaft on the shocks, which resists rock damage and corrosion.

Notes

• Towing capacity will be reduced with the installation of this kit.
• This kit is primarily designed to only be driven in 2WD at speed on public roads; 4WD is only to be used off-road or in adverse slow speed conditions due to potential driveline vibrations at high speeds.
• A double cardan driveshaft may be required to help eliminate some of the high-speed 4WD front driveline vibrations when kits are 5-8 inches high.
• Vehicle alignment and headlamp aim must be checked and adjusted after product installation.
• If the vehicle is equipped with Advanced Driver Assistance Systems (ADAS), these systems may require recalibration.

Compatibility Notes

• Made to fit 2011-2019 Chevy Silverado and GMC Sierra 2500/3500 HD trucks.
• Will not fit DRW (Dual Rear Wheel) applications without custom U-bolts.
• Some SRW (Single Rear Wheel) models may require custom U-bolts to accommodate the factory tow package.
• The kit can be used on 2019 Chevy 3500 dually with factory overload springs, but longer U-bolts may be required.
• The Single Cab configuration has not been validated for fitment and drivability by ReadyLIFT.

Tire Fitment

• Maximum tire diameter is 35 inches.
• Allows for up to 35x12.50 with a 20x9-inch wheel with 0 offset.
• Recommended maximum tire for no rub is 35x12.50 on a 9-inch wide wheel with -6 offset.
• Recommended tire sizes include 35X12.5R18 and 35X12.5R20.

Specs

• Lift Height: Adjustable from 5 inches to 6 inches.
  
• Shock Type: Falcon 2.1 Monotube Dampers (4 shocks).
  
• Crossmember Material: 3/16-inch and 1/4-inch steel plate.
  
• Skid Plate Material: 3/16-inch steel plate.
  
• Kit Contents: Crossmembers, Cast Iron Knuckles, Forged Torsion Keys, Rear Lift Blocks, Falcon 2.1 Shocks, Differential Drop Brackets, CV Axle Spacers, Sway Bar End Links, Bump Stop Extensions, and Skid Plate.