Ready Lift 42-21640 6" MAX3.3 Suspension Lift System for Ford F-150

The Ready Lift 42-21640 MAX3.3 Suspension System delivers a complete 6-inch lift solution for 2021-2024 Ford F-150 4WD models, combining premium fabricated steel components with advanced adjustable damping technology. This comprehensive system enables fitment of up to 295/65R20 tires without trimming, or up to 37x12.50" tires with minor modifications.

Advanced 3.3 Fast Adjust Dampers:

• Dual adjustment system with 3-position fast adjust knob (Soft, Custom, Firm) and 8-position micro adjust dial for precise damping control
• Hard anodized large bore 6061-T6 aluminum shock body for superior impact and corrosion resistance
• Remote reservoir design increases nitrogen-to-oil ratio for consistent performance across temperature extremes
• Red Line high VI shock oil maintains performance from -50°F to 450°F with anti-wear and lubricity agents
• VOD (Volume Optimized Damping) features a digressive linear piston for reduced body roll and increased bottom-out resistance
• Soft mode allows partial bypass of main piston for comfortable daily driving

Heavy-Duty Construction:

• DOM tube steel upper control arms with proprietary heavy-duty high-angle ball joints for improved suspension geometry
• Fabricated steel components utilizing 3/16" and 1/4" steel plate construction
• Full-coverage differential skid plate constructed from 3/16" steel for undercarriage protection
• Includes HD alignment cam bolts for proper front-end alignment after installation

Wheel and Tire Fitment:

• No trimming: 295/65R20 with 20x9" wheel (0 offset)
• With trimming: Up to 37x12.50" with 20x9" wheel (0 offset)

Important Compatibility Notes: This system is designed for 4WD Ford F-150 models only. Does not fit vehicles equipped with CCD (Continuously Controlled Damping), 2WD models, Raptor variants, or F-150 equipped with diesel engines.