6" MAX3.3 Suspension System with Falcon 3.3 Shocks And Fab UCA Arms - 2020-2026 GM Silverado / Sierra 2500HD/3500HD (part number 42-30660).

Built for serious truck owners who demand more performance, capability, and confidence - on or off the road. ReadyLIFT is raising the bar once again with the release of our 6" MAX3.3 Premium Suspension Systems for the 2020-2026 Chevy Silverado and GMC Sierra 2500/3500 HD.

Engineered from the ground up to deliver the ultimate blend of strength, handling, and ride quality, this system is powered by our vehicle-specific Falcon 3.3 Fast Adjust Piggyback Shocks - the most advanced shocks ever offered in a ReadyLIFT HD system. With Falcon's dual-knob adjustability, drivers can fine-tune compression and rebound independently for any terrain or load. From highway cruising to heavy towing to weekend off-road adventures, the MAX3.3 system gives you full control of your truck's ride and handling characteristics.

Engineered to Perform, Built to Last This system is more than just a lift; it's a complete suspension upgrade designed with precision geometry and heavy-duty construction. Highlights include: Laser-cut, CNC-formed crossmembers and full-coverage differential skid plate built from 3/16" steel. OE-style cast iron knuckles with corrected geometry for proper steering and handling. Xtreme-Duty 4130 chromoly steel upper control arms with corrected ball joint angles for long-term durability. Cast rear lift blocks and taller fabricated torsion arm brackets for a level stance and reliable strength.

The system clears up to 37x12.50 tires on 20x9 wheels (0 offset) giving your GM HD truck the aggressive stance and capability it deserves without sacrificing drivability. Falcon 3.3 Fast Adjust Performance 3-Position Compression Knob: Soft, Custom, or Firm to instantly change ride feel. 8-Position Micro Adjust Dial: Fine-tune rebound damping with precision. Reservoir Design: High-capacity reservoir maintains consistently damping across temperature ranges. Hard-anodized 6061-T6 Aluminum bodies resist impact and corrosion while increasing oil capacity for consistent performance.

VOD (Volume Optimized Damping) piston technology reduces body roll, improves control, and minimizes bottom-out in extreme conditions. Red Line High VI Shock Oil delivers consistent performance at extreme temperatures (-50 degrees F to 450 degrees F). Built for Every Job Whether you're towing, hauling, exploring the backcountry, or just want the ultimate HD stance for daily driving, the ReadyLIFT 6" MAX3.3 delivers unmatched versatility, premium ride quality, and serious strength. 6" Lift Kit GM HD Trucks

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. Allow up to 37x12.50 with a 20?-9" with a 0 offset wheel Xtreme-Duty fabricated 4130 chromoly steel upper control arms 3.3 Fast Adjust Dampers offer a wide range of adjustability for specific terrain and/or handling characteristics with two separate knobs to tune to your preference.

3-Position Fast Adjust Knob for Soft, Custom, and Firm Compression. Soft mode allows a partial bypass of the main piston for a softer ride 8-Position Micro Adjust Dial offers refined damping adjustments Reservoir design increases nitrogen to oil ratio for consistent damping over wide temperature ranges. If the ReadyLIFT kit's standard U-bolts are too short, ReadyLIFT recommends locally sourcing custom U-bolts built to each truck's specifications.

Fitment and Installation Notes

• Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT.
• Some GM HD trucks equipped with Tow Package may require custom-length U-bolts purchased separately.
• Custom U-bolt length may vary by vehicle application.
• Single cab fitment has not been validated. GM HD trucks with factory Tow Package may require custom-length U-bolts.

37" Maximum tire diameter

37x12.50 for no rub on a 9" wide wheel with 0 offset

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.

KNUCKLE DRIVER

KNUCKLE PASSENGER

TORSION BAR BRACKET, DRIVER

TORSION BAR BRACKET, PASSENGER

TORSION ARM SPACER x 2

TORSION ARM COLLAR x 2

FAB UCA 2020-2025 - CHEVY/GMC HD-KIT

TORSION KEY KIT

AMI DIFF DROP CHEVY HD 2011-UP x 4

LASER CUT WASHER DIFF SPACER ZINC x 4

2020+ GM HD XMBR, FR

2020+ GM HD XMBR, RR

SKID PLATE

CV AXLE SPACER x 2

DRIVER DIFF BRACKET

PASS DIFF BRACKET

DIFFERENTIAL CRADLE SPACER x 4

REAR 12" STRAIGHT END LINK x 2

CRUSH SLEEVE x 4

BUSHING x 4

FRONT BRAKE LINE BRACKET DRIVER

KNUCKLE DRIVER BRAKE LINE BRACKET

FRONT BRAKE LINE BRACKET PASSENGER

KNUCKLE PASSENGER BRAKE LINE BRACKET

BUMP STOP EXTENSION x 2

BUMP STOP NUT PLATE x 2

BUMP STOP EXTENSION WASHER x 2

2020+ GM 2500/3500,Coilover/ Remote Resi, Series 3 / Type 3, Single Finished /Front/Left

2020+ GM 2500/3500,Coilover/ Remote Resi, Series 3 / Type 3, Single Finished /Front/Right

2020+ GM 2500/3500, Smooth Body, Series 3 / Type 3, Rear Left x 2

Block Kit

REAR BRAKE LINE BRACKET

HARDWARE PACK