4" ReadyLift Lift Kit | 2019-2024 GMC Sierra 1500 AT4 & Chevy Silverado 1500 Trailboss | SST 2.1 kit

🔧 ReadyLIFT 4” SST2.1 Lift Kit for 2019–2024 Chevy Silverado & GMC Sierra 1500

Take total control of your truck’s performance, handling, and style with ReadyLIFT’s most advanced suspension system yet. This isn't just a lift—it’s a complete performance overhaul built for drivers who demand more out of their truck on and off the pavement.

💪 Why Choose the SST2.1 Kit?

This 4” Smart Suspension Technology (SST) lift kit delivers an aggressive stance, uncompromised ride quality, and rugged durability—all with no cutting or welding required.

🔧 Features & Benefits:

✅ Falcon 2.1 Adjustable Shocks (Front & Rear):

• 3-Position Fast Adjust Dial for:

  • Sport

  • Moderate Tow/Haul

  • Heavy Tow/Haul

• Tuned for daily driving, towing, and off-road control

• Remote reservoir design for cooler, fade-free performance

• Vehicle-specific valving for precision comfort and control

• Hard anodized 6061-T6 aluminum for rugged durability

• 3/4” induction-hardened chrome shaft resists damage

✅ DOM Tubular Steel Upper Control Arms:

• Corrects uniball angle on lifted setups

• High-angle proprietary ball joints allow superior articulation

• Extends suspension life and improves droop travel

• Pre-installed maintenance-free pivot bushings

✅ Smart Suspension Design:

• No cutting required—fully bolt-on

• Maintains factory ride quality while enhancing off-road performance

• Engineered to preserve alignment specs and geometry

✅ Tire & Wheel Fitment:

• Chevy (2019–2022): 295/65R20 w/ 20x9 0 offset

• GMC + Chevy (2023–2024): 295/55R20 w/ 20x9 0 offset

⚠ Trimming may be required based on wheel/tire combo

✅ Lift Specs:

• 4” front lift height

• 2.25” rear lift via new rear blocks

• Fabricated for durability and long life

🛠 Application Notes:

• Not compatible with:

  • 2019 Classic Body (LD), Limited models, or Super Cruise

  • ZR2 or AT4X trims

  • Single Cab models (not validated)

• ARC-equipped vehicles require an aftermarket bypass; not supported by ReadyLIFT

• Auto 4Hi is not recommended with this lift

• Mono-leaf trucks require part #: 67-39530UB

🚀 Why This Kit?

This isn’t just another lift. The ReadyLIFT 4" SST2.1 Kit is built for performance-focused truck owners who want more travel, better handling, and adjustability—without sacrificing ride comfort or requiring invasive modifications.

🏁 Upgrade your ride.

Whether you're towing heavy loads, cruising the streets, or hitting the trails, ReadyLIFT’s 4” SST2.1 Lift Kit is the premium suspension solution for your Silverado or Sierra.
✅ Confident stance
✅ Controlled ride
✅ Complete versatility

📦 Order today and experience what a real performance lift feels like!