Upgrade your Ford F-350’s rear suspension with the RAS HD Suspension Kit—designed specifically for 2011–2025 models without factory overload springs. This bolt-on RoadActive Suspension system strengthens your rear leaf springs by 30–40%, reducing squat, sway, and bounce while providing a smoother, more stable ride under load or unloaded.
Unlike air bag systems, RAS is fully mechanical and maintenance-free—no compressors, air lines, leaks, or constant adjustments are required. The included heavy-duty helper springs stabilize your truck for towing and hauling while maintaining or improving stock unloaded ride quality. Each kit ships fully assembled and is ready for fast, bolt-on installation.
Key Features:
• Fits 2011–2025 Ford F-350 trucks without factory overload springs
• Strengthens rear leaf springs by 30–40% for added support
• Includes RAS Heavy Duty Helper Springs for each rear leaf spring
• Reduces rear-end squat, body roll, bounce, and axle wrap
• Progressive load support for towing and hauling
• Maintenance-free—no air lines, leaks, or adjustments needed
• Fully assembled for fast, bolt-on installation (~45–60 minutes)
• Same-as or better-than stock unloaded ride quality
Before You Order
Verify part number 3611-SHD exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify 3611-SHD on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.
