ReadyLift 6” Big Lift Kit 2019-2024 1500 Trail Boss / AT4

ReadyLift 6'' Big Lift Kit 2019-2024 1500 Trail Boss / AT4

Part Number: 44-39620

ReadyLift 6'' Big Lift Kit 2019-2024 1500 Trail Boss / AT4 is ReadyLift part 44-39620 for 2019-2025 Chevy/GMC 1500 4WD.

Features and Benefits

• Maintains the factory ride and handling.
• Delivers clearance for increased aftermarket tire sizes
• up to 37×12.50 on 6-inch kit on 9" wide wheels with 0 offsets with no trimming.
• -18 offset will require minor trimming.
• The proprietary lower strut clamshell design maintains factory geometry and retains the use of the factory strut.
• Tube steel upper control arms with maintenance-free pivot bushings and 1-ton ball joints.

Fitment

What’s Included

• Heavy-duty front-rear cross members and skid plate
• Heavy-duty top mount strut extensions and rear shock extensions
• Sway bar drop brackets
• Heavy-duty fab steel rear lift blocks with bump stop landings.
• Heavy-duty cast iron lift knuckles engineered to retain factory quality geometry.
• All necessary hardware and instructions.

Tire and Wheel Fitment

• Recommended max tire with no trimming: 20×9 0 offset – 37×12.50 tire.
• *Max with trimming: 20×10 -18 offset – 37×12.50.
• Trimming requirements for larger than recommended wheel/tire include front valance, front felt liner edge, rear felt liner edge and front rear well edge mud flap.
• 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…
• 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…

Important Notes

• Note: Use of Auto 4 Hi feature not recommended.
• Note: Not compatible with rear mono-leaf springs. Not for use on Diesel as we don't include an oil line relocation bracket. Click here to learn how to determine if you have rear mono-leaf springs. Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT. Not for use…
• NOTE: These will not fit late model 2024 or 2025 applications that have round U-bolts. Using U-bolt part number 67-35150UB will allow this kit to fit 2025 applications.

Installation

Download Pdf Instructions