Air Helper Springs for Towing Heavy Loads Reduce Rear Sag Stabilize Sway Progressive Microcellular Polyurethane Springs Load-Leveling Support for 2009-2021 Ford F-150 4WD Replacement for SSR-117-47

OEM Part Number：SSR-117-47, SSR11747Fitment：Fit for Ford F-150 4WD 2009-2021Features：Decreases Vibration & Stabilizes Sway: Manufactured from microcellular polyurethane, the air helper spring is designed to reduce rear-end sag, decrease vibration, stabilize sway, and soften harsh rebounds. It can effectively enhance the load-bearing performance of the suspension system.Support & Control: Progressive spring with a very soft initial engagement. That means that as more weight added, the harder they get and more they push back, providing support and control. No matter empty or heavy loads can maintain a smooth ride.

• 【Superior Load Support & Leveling】 Experience a new level of towing and hauling control. These rear air helper springs are engineered to effectively increase your rear suspension's load-bearing capacity. By providing progressive support, they automatically adjust to the weight, keeping your F-150 level whether you're hauling heavy equipment in the bed or towing a large trailer. This helps prevent rear-end sag, bottoming out, and poor handling associated with heavy loads.
• 【Progressive Microcellular Polyurethane Design】 Crafted from high-strength microcellular polyurethane, our springs offer a unique progressive engagement. This means the spring rate remains soft during normal, unloaded driving for a comfortable ride. As you add more weight, the springs progressively become firmer, providing increasing support exactly when you need it. This advanced design effectively decreases vibration, stabilizes sway, and softens harsh rebounds for a composed drive.
• 【Reduce Sway & Enhance Stability for Safer Towing】 Safety and stability are paramount when towing. These air helper springs are designed to minimize dangerous trailer sway and vehicle roll caused by crosswinds or uneven loads. By improving the stability of your rear suspension, they enhance braking efficiency and steering response, giving you greater confidence and control when navigating highways or rough terrain with a heavy trailer.
• 【Precision Fit for 2009-2021 Ford F-150 4WD】 Designed for a direct fit, this kit is specifically engineered for the 2009-2021 Ford F-150 4WD models. It seamlessly integrates with your factory suspension system. The kit includes everything needed for installation and comes as a direct replacement for OEM parts SSR-117-47 and SSR11747. Please verify your vehicle's year and model to ensure proper compatibility.
• 【Durable Construction & Smooth Ride Quality】 Built to withstand the demands of daily work and weekend adventures, our air springs are constructed from durable, weather-resistant materials. Unlike traditional rubber air bags that can deteriorate, our microcellular polyurethane construction is resistant to tearing and ozone damage, ensuring long-lasting performance. Enjoy a smooth, controlled ride whether your truck is empty or fully loaded, without the harshness of traditional steel leaf springs.