5-6" ReadyLIFT Suspension BIG Lift Kit | Falcon 2.1 Shocks (Chevy/GMC 2500HD/3500HD 2011-2019)

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*All other brand lift kits are available.

ITEM# RLC230

MFG# 42-31540

• 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.✔
• 3/4" induction hardened chrome plated shaft resists rock damage, corrosion, and shaft buckling.✔
• Large shaft diameter provides a wide range of adjustments on adjustable shocks.✔
• Heavy-duty 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 crossmembers.✔
• 5"-6" lift allows up to 35x12.50 with a 20x9" with 0 offset✔
• Note: Single Cab configuration has NOT been validated for fitment & drivability by ReadyLIFT. ✔

   * See Details for Notes on Tow Package Compatibility.

ReadyLIFT delivers a performance game changer for the popular 2011-2019 Chevy Silverado and GMC Sierra 2500/3500 HD trucks with the release of ReadyLIFT's new 5"-6" MAX2.1 Suspension 2.1 Falcon shocks. Designed to improve stance, performance, and capability, this kit includes everything necessary to clear larger wheels and tires. With vehicle-specific performance-tuned Falcon 2.1 dampers on all four corners of ReadyLIFT's 5"-6" kits, these lift kits provide a better-than-factory feel. Falcon Performance Shocks improve performance and comfort regardless of the terrain. The versatility of these systems makes them ideal for daily driving, off-road excursions, and tow/haul duties.

The 42-31540 5"-6" MAX2.1 system includes laser-cut, fabricated heavy-duty steel cross-members, new cast iron OE-style knuckles with the perfect geometry built-in, torsion arm brackets, taller cast style rear lift blocks, new forged torsion keys with the proper amount of indexing. These new torsion bar relocation brackets eliminate the traditional lowering of the torsion bars, which can inhibit ground clearance and help to improve the overall driving experience. Additionally, each kit includes crucial differential drop brackets and CV axle spacers, sway bar end links, bump stop extensions, OE style cast rear lift blocks, heavy-duty steel skid plate, and finally, Falcon shocks.

Features:
- 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.
- 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.
- Heavy-duty 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 crossmembers.
- 5"-6" lift allows up to 35x12.50 with a 20x9" with 0 offset



NOTE: Some SRW (Single Rear Wheel) models may require custom U-Bolts to accommodate the factory tow package. Will not fit DRW (Dual Rear Wheel) applications without custom U-bolts. 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 and that 4WD is only to be used off-road or in adverse slow speed conditions due to drive line 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'' high.

35" Maximum tire diameter

35x12.50 for no rub on a 9" wide wheel with -6 offset

18" - 35X12.5R18

20" - 35X12.5R20



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, rolling diameter, tread width, aspect ratio, lug pattern, sidewall construction and inflation pressure, will vary meaningfully by tire and wheel manufacturer. Every tire and wheel combination should be test fit prior to installation. Consult your local installer to learn more about the right tire fitment for your application.

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 SUV tires are 10-ply (or more) E tires compared to typical OEM 6-ply C tires. This more rigid sidewall construction increases the perception of suspension stiffness often described as ride harshness. The ride, handling, traction, noise, fuel economy, and wear differences between All-Season, All-Terrain, Mud-Terrain, or Trail-Terrain type tires can be significant. Please take into account tire and wheel choice will generally have a meaningful impact on the ride & handling experience.

Please read Instructions thoroughly and completely before beginning installation. Installation by a certified mechanic is recommended.

Estimated Installation Time: 12 Hours +/- 1 hour (excluding alignment and wheel/tire assembly)

View Instruction Sheet

· Heavy Duty welded steel crossmembers
· Heavy Duty iron knuckles
· Cast iron rear lift blocks with integrated bump stop landing pads.
· Heavy duty skid plate.
· Forged Torsion keys indexed to provide up to 6" of adjustable lift.
· Assorted hardware and accessories
· Includes 4 Falcon 2.1 Monotube Shocks.

Local pickup welcome.

Some vehicles may require additional modifications or parts.

Guaranteed Fitment.

Questions Call us at (888) 814-1158