ReadyLift 2019-2024 GMC/Chevy Sierra/Silverado 1500 4" SST2.1 Premium Suspension System - 62-39440

This isn’t just an upgrade — it’s a transformation. Get the best in performance, durability, and versatility with ReadyLIFT’s 4" SST2.1 Suspension System. Don’t just lift your truck—elevate your driving experience. Get yours today and experience what true performance feels like.

Your Truck Deserves the Best—Not Just Another Lift Kit. Upgrade your 2025 GMC Sierra or Chevy Silverado 1500 with the ultimate suspension system engineered to outperform and outlast the competition. ReadyLIFT’s all-new 4" SST2.1 Lift Kit doesn’t just raise your truck—it redefines what’s possible in ride quality, strength, and capability.

At the core of this industry-leading system are our all-new Falcon 2.1 Series front struts and rear shocks—a game-changer in suspension technology. Unlike standard lift kits that compromise ride quality, the Falcon Performance Shocks deliver unmatched comfort, control, handling, and design — whether you're cruising the highway, conquering the trails, or hauling serious weight.

• Adjustable Suspension for Any Situation
• ·         Works on AT4 and TrailBoss but lift heights over stock are 2".
• ·         Use of Auto 4 Hi feature is not recommended.
• ·         Have not tested on ZR2 and AT4X.
• ·         Not compatible for 2019 classic body LD, Limited or Super Cruise.
• ·         Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT.
• ·         Vehicles with ARC would need an aftermarket bypass product to work.  ReadyLIFT does not support this function.
• ·         Vehicles with Mono-leaf rear springs require 67-39530UB. Before ordering a ReadyLIFT GM1500 Lift Kit, please check the rear leaf spring for kit compatibility.
• Easily switch between Sport, Moderate Tow/Haul, and Heavy Tow/Haul with our 3-position Fast-Adjust Falcon 2.1 Shocks, ensuring your ride is optimized for whatever the road (or lack of it) throws at you.
• More Strength, More Control
• Built with heavy-duty DOM tubular steel upper control arms featuring high-angle proprietary ball joints, this kit provides superior articulation, enhanced durability, and extended component life—something generic lift kits just can’t match.
• Larger Wheels, Bigger Presence
• Say goodbye to restrictive stock setups. This lift kit opens up 295/65R20 (Chevy) and 295/55R20 (GMC & Chevy) tire fitments, giving your truck the aggressive stance and unstoppable ground clearance it was born to have.
• Smart Suspension Technology
• Unlike traditional cut-and-weld lift kits, our no-cut design preserves your factory ride characteristics while unlocking superior off-road capability and a bold new look.
• Note: