

SKU: SKU: RL-62-35440
4" SST2.1 lift kit with 3-position Fast-Adjust Falcon 2.1 struts and shocks for 2025+ Chevrolet Silverado / GMC Sierra 1500.
ReadyLIFT's all-new 4" SST2.1 system is built around Falcon 2.1 series front struts and rear shocks with 3-position Fast-Adjust tuning (Sport, Moderate Tow/Haul, Heavy Tow/Haul). Heavy-duty DOM tubular steel upper control arms with high-angle proprietary ball joints add articulation and durability, while the Smart Suspension Technology no-cut design preserves factory ride characteristics.
Fits: 2025+ Chevrolet Silverado 1500 / GMC Sierra 1500. Works on AT4 and TrailBoss but lift over stock is 2".
Opens up 295/65R20 (Chevy) and 295/55R20 (GMC & Chevy) fitments.
Auto 4 Hi not recommended; not tested on ZR2/AT4X. Vehicles with mono-leaf rear springs require 67-39530UB. Single-cab configuration not validated by ReadyLIFT.
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