ReadyLift 49-23423 4-Inch Coil Spring Suspension System with Falcon 2.1 Shocks and Radius Arms

The ReadyLift 49-23423 is a 4-inch coil spring suspension system engineered for 2023–2026 Ford Super Duty F-250/F-350 4WD diesel trucks. This complete lift solution pairs Falcon 2.1 monotube performance shocks with heavy-duty tubular radius arms to deliver a substantial lift while preserving ride quality and on-road handling.

The tubular radius arms are purpose-built to correct the caster angle that is altered when the front suspension is lifted. Their inward-formed design provides additional tire clearance, enabling fitment of oversized tires without compromising suspension geometry. Oversized rubber bushings help isolate road noise and vibration for a more refined driving experience.

Key Features:

• 4-inch coil spring lift with Falcon 2.1 monotube shocks front and rear
• Heavy-duty tubular radius arms correct caster angle on 3.5- to 6-inch lifted models
• Direct bolt-on installation — no structural modifications required
• Supports up to 37-inch tall tires on 9-inch wide wheels with +18 offset
• Oversized rubber bushings reduce road noise and vibration harshness
• Designed for diesel-powered, rear single-wheel trucks only

Important Notes: Intended for 4WD diesel trucks only; not recommended for 2WD or gasoline-powered applications. Tremor models may not achieve the full 4 inches of lift over stock ride height. Trucks equipped with the Onboard Scale option require the ReadyLift Auto-Leveling Headlight Bypass Bracket Kit (PN: 67-23610), sold separately. Single Cab configuration has not been validated for fitment and drivability by ReadyLIFT.