ReadyLIFT 4” Lift Kit with Radius Arms and Falcon Shocks – Ford Super Duty F250 / F350 4WD (2017–2022)

The ReadyLIFT 4” Coil Spring Lift Kit (49-27421) is designed for the Ford Super Duty F250 / F350 4WD (2017–2022) with the Power Stroke diesel engine.

This version includes heavy-duty tubular radius arms, which correct the suspension geometry and provide significantly better stability and control than standard lift kits.

Considered the “sweet spot”, this 4” lift allows tyres up to 37” to be fitted while keeping comfort and practicality for everyday use.

⭐ Key Features

• Lift: 4” (≈10 cm)

• Suitable for tyres up to 37”

• Tubular radius arms for optimal geometry

• Improves handling and stability

• Bolt-on installation (no modifications)

🔧 Equipment

• Front coil springs (4” lift)

• Falcon 1.1 Monotube shocks (4 pcs.)

• Tubular radius arms (heavy-duty)

• Track bar relocation bracket

• Rear lift blocks

• Brake line extension brackets

• Sway bar relocation brackets

• Bump stop extensions

🔗 Compatibility

• Ford Super Duty F250 / F350 4WD (2017–2022)

• Only for the Power Stroke Diesel

• Only for single rear wheel (SRW)

📦 What’s in the Box

• Front springs (4” lift)

• Falcon shocks (front + rear)

• Tubular radius arms

• Track bar bracket

• Rear blocks

• Additional mounting components

• Mounting hardware

📊 Technical Specifications

• Type: lift kit (premium suspension system)

• Lift: 4”

• Max. tyres: up to 37”

• Wheels: 9” width / +18 offset

• Suspension: coil spring + monotube shocks

⚙️ Benefits of Radius Arms

• Better suspension geometry

• Less component wear

• Increased stability at high speed

• Better off-road control

• More room for larger tyres

⚠️ Important

• Only for Diesel Power Stroke versions

• Not recommended for:

  • 2WD models

  • Petrol versions

• Tremor models will not get the full 4”

• 2017–2019 models may have slightly less lift

• Single Cab is not validated

• Check compatibility based on your vehicle’s model, year and configuration

• Professional installation is recommended