The ReadyLIFT 8" MAX3.3 Suspension System With Falcon 3.3 Shocks combines a tall lift with Falcon performance shocks chosen for this truck. The shocks are part of the system, so the damping is matched to the lift from the start. ReadyLIFT system 42-39840 is engineered for the 2019-2024 Chevrolet Silverado 1500, Silverado 1500 LD and Silverado 1500 LTD and GMC Sierra 1500.
What's Included:
| Kit components (ReadyLIFT) |
|---|
| Falcon front right coilover GM 1500 8" |
| Falcon front left coilover GM 1500 8" |
| Front Cross Member |
| Rear Cross Member |
| Skid Plate |
| Driver Diff Drop |
| Passenger Diff Drop |
| Passenger Diff Drop Spacer |
| Rear Diff Drop |
| Diff Drop Crush Sleeve |
| Sway Bar Bracket Driver |
| Sway Bar Bracket Passenger |
| Cam Block Off Plate |
| 51071B-2 PRO COMP Driver Knuckle |
| 51071B-3 PRO COMP Passenger Knuckle |
| Driver Fabricated Block (5" Tall/Tapered 5 degree/Offset pin) |
| Pass. Fabricated Block (5" Tall/Tapered 5 degree/Offset pin) |
| Rear Brake Line Bracket |
| Rear ABS Bracket |
| CV Axle Spacer (1/4" thick outer spacer) |
Wheels, tires, alignment, headlamp aiming, ADAS recalibration and any trimming labor are not included.
Features
Falcon shocks in every system
Every system in this line includes Falcon performance shocks, ReadyLIFT's own damper line, selected for the truck and the lift height.
Tall lift, large tires
These systems deliver big-lift height and clear a large tire package. ReadyLIFT lists the tested tire size for each truck.
Geometry kept in check
Heavy-duty brackets, crossmembers, knuckles, radius arms or track bar brackets reposition the suspension so it works at the new height.
Tuned for mixed duty
ReadyLIFT pitches Falcon-equipped systems for daily driving, off-road trips and tow or haul work on the same truck.
Complete system per truck
Each system is engineered for one platform and ships with the components listed in its kit contents.
Fitment & Compatibility
Fit guidance: Fits: 2019-2024 Chevrolet Silverado 1500/Silverado 1500 LD/Silverado 1500 LTD & GMC Sierra 1500, with the qualifiers shown. Check your vehicle's trim, drivetrain and factory suspension against these notes before ordering.
ReadyLIFT fit notes for this part
| May require trimming of front valance, inner fender liners, and mud flaps NOTES: If used on a AT4 or Trail Boss you will get a net a 6" over factory stock height |
| Use of Auto 4 Hi feature not recommended |
| Not for use on Diesel as we don't include an oil line relocation bracket or Denali models |
| Not compatible with Adaptive Ride Control or keeping Multimatic suspension |
| Not compatible with rear mono-leaf springs |
| Not compatible with Super Cruise |
Specifications
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Brand: ReadyLIFT
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Series: Falcon
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Shocks: Falcon performance shocks included
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Warranty: ReadyLIFT No Hassle warranty, original purchaser; shocks and other wear parts up to 1 year
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Lift height: 8"
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Install time (ReadyLIFT estimate): about 10 hours (give or take 1), alignment and wheel mounting extra
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Shipping weight: 314 lb
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Kit type: Suspension system
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Largest tire: 37"
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Alignment required: Yes, after installation
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Install difficulty: Professional install recommended
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Part number: 42-39840
Installation
Type: premium suspension lift · Install: involved, per-vehicle install sheet · Afterward: alignment, headlamp aim, ADAS check
This system installs using the steps in ReadyLIFT's instructions for this truck, including any trimming the instructions call for. Plan on a wheel alignment after installation and have headlamp aim checked. Vehicles with camera, radar or sonar driver-assistance systems need those systems checked and recalibrated, which can require dealer tools. ReadyLIFT recommends installation by a certified mechanic and says to read the full instructions before starting. Tire sizes are ReadyLIFT guidance based on specific wheel and tire brands, so test fit every combination. Larger E-rated tires have stiffer sidewalls than stock C-rated tires and can make the ride feel firmer.
ReadyLIFT estimates about 10 hours for this kit, give or take 1 hour, not counting the alignment or mounting wheels and tires.
ReadyLIFT's installation instructions for this part number are linked under Resources. Read them fully before starting.
Resources
Warranty, Shipping & Returns
Warranty. ReadyLIFT backs this product with its No Hassle warranty for the original purchaser: if a part breaks or arrives defective, ReadyLIFT ships a replacement, and a claim starts with a call to 800-549-4620. Wear items such as the included shocks, ball joints and bushings are covered for up to one year. Damage caused by off-road abuse voids coverage. Discontinued, clearance and outlet items are excluded, as are labor, installation charges and consequential vehicle damage. Shipping. The carrier and ship method are set by the size and weight of the cartons when the order is placed; larger kits ship by freight. Inspect on delivery. Check every box and part against the kit component list when it arrives, and report any shortage or shipping damage before installation begins.
Returns. Unused items in their original packaging can be returned within 30 days of delivery. If an item arrives damaged, defective or wrong, return shipping is on us. See our Returns & Refunds Policy, or email support@prestigetruck.com with any question.
About ReadyLIFT
ReadyLIFT Suspension started in 2006 with one goal: give truck and SUV owners more tire clearance and a better stance while keeping the ride and handling their vehicle had from the factory.
What began as a practical option to traditional big lifts now spans front leveling kits, SST mild lifts, full big lift systems, premium coilover packages, upper control arms and Falcon shocks for popular trucks and SUVs.
Wheel Pros bought ReadyLIFT in 2018, and in August 2026 the brand joined Bestop Premium Accessories Group, which plans continued investment in engineering, product development, manufacturing and customer support.
