🔥 Rough Country 59640 6-Inch 4-Link Suspension System
M1 Monotube Lift Kit for Ford F-250 / F-350 Super Duty 4WD (2005–2007)
If you want aggressive ride height with upgraded monotube damping, this configuration delivers. The Rough Country 59640 lift kit is engineered specifically for the 2005–2007 Ford F-250 and F-350 Super Duty 4WD platform. It provides six inches of suspension lift using a full 4-Link front suspension conversion paired with M1 monotube shocks.
Unlike simple radius arm drop systems, this setup replaces the factory radius arms. It enhances articulation and improves axle stability under load.
This Lift Kit is designed for drivers who want structural suspension improvement combined with larger-body monotube shock performance.
🚙 Vehicle Compatibility
Designed specifically for:
Not compatible with 2WD models.
Compatible with diesel and gas engines. Always verify axle size and drivetrain configuration before installation.
Engineered around the coil spring solid front axle used in 2005–2007 Super Duty trucks.
🆚 What Makes the 59640 Configuration Different?
The 59640 configuration combines a full 4-Link suspension system with M1 monotube shocks.
This system typically includes:
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Upper and lower 4-Link control arms
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Heavy-duty front crossmembers
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Lifted front coil springs
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Rear lift blocks
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M1 monotube shock absorbers
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Adjustable track bar
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Brake line relocation brackets
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Differential drop brackets
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Sway bar relocation components
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High-strength mounting hardware
The 4-Link design improves articulation and axle positioning.
M1 shocks feature a larger monotube body compared to V2 versions.
This Lift Kit delivers both structural suspension correction and enhanced damping capacity.
💪 4-Link Suspension Geometry Advantage
The 2005–2007 Super Duty platform uses factory radius arms.
While durable, radius arms restrict independent axle movement.
A 4-Link suspension separates upper and lower control arms. That allows improved flex and steering control.
Benefits include:
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Increased off-road articulation
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Improved steering precision
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Reduced suspension bind
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More consistent caster alignment
This geometry improves highway stability and trail capability.
It enhances control during braking and acceleration.
🎯 M1 Monotube Shock Performance
M1 shocks are performance-focused monotube dampers.
Advantages include:
Monotube construction separates gas and oil chambers. That reduces shock fade during extended driving.
Compared to V2 shocks, M1 units offer greater oil volume and thermal stability.
This configuration is ideal for heavy-duty use and frequent towing.
🌄 Six Inches of Ride Height and Clearance
Six inches of suspension lift dramatically changes the truck’s profile.
Increased ride height improves ground clearance and approach angles.
Many owners run 35-inch tires with proper wheel offset. Always confirm tire and wheel compatibility before installation.
The truck gains improved undercarriage protection and bold styling.
This Lift Kit enhances both appearance and functionality.
🚛 Towing and Heavy-Duty Applications
Super Duty trucks are built for demanding workloads.
The 4-Link geometry maintains proper axle alignment under heavy loads.
Rear lift blocks preserve rake for trailer balance.
M1 monotube shocks improve rear stability while hauling equipment.
Correct suspension angles reduce stress on driveline components.
This suspension upgrade supports commercial and recreational builds.
🛠 Installation Overview
Professional installation is strongly recommended.
This is a complete 4-Link conversion system.
The kit bolts to factory mounting points using supplied hardware.
A complete alignment is mandatory after installation.
Installation time is longer than basic drop bracket systems.
Proper setup ensures safe operation and long-term durability.
🔩 Built for Strength and Reliability
Powder-coated steel components resist corrosion and harsh environments.
Heavy-duty crossmembers reinforce suspension mounting areas.
High-grade hardware secures control arms and suspension components.
M1 shocks are engineered for demanding heavy-duty conditions.
This suspension system is built for long-term reliability.
🚀 Why Choose the 59640 Suspension System?
This configuration is ideal if you want:
It delivers structural suspension improvement with enhanced damping control.
This Lift Kit provides engineered height and performance for 2005–2007 Super Duty trucks.
🔗 Explore More Suspension Options
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Protect your upgraded truck with professional window services.
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📞 Need Expert Assistance?
Have questions about compatibility or shock differences? Contact Audio Jam at (302) 832-2868. Our team can help you choose the right suspension configuration.
❓ Frequently Asked Questions
1. Will this Lift Kits fit my 2007 Ford F-250 Super Duty 4WD?
Yes. This Lift Kits is designed for 2005–2007 F-250 and F-350 Super Duty 4WD models.
2. What makes this Lift Kits different from the V2 version?
This Lift Kits includes larger-body M1 monotube shocks instead of V2 shocks.
3. Can this Lift Kits support towing and heavy loads?
Yes. This Lift Kits maintains corrected suspension geometry for stable towing performance.
