Rear Air Helper Spring 1000lbs Load Capacity Progressive Rate Sway Reduction for Ford F150 4WD 2009-2021 Pair Left Right Direct Replacement

Why Choose This Air Helper Spring ?This suspension component is engineered to boost load-bearing capacity, minimize body roll, and upgrade overall driving control as well as ride comfort. Maintenance-free and leak-proof, it eliminates the need for air lines or compressors. We provide a wide range of options with varied heights, diameters, and densities, compatible with diverse front and rear axle setups. Crafted from advanced proprietary closed-cell microcellular polyurethane, it features smooth, progressive spring stiffness and outstanding shock absorption.Product Specifics：Product Type: Air Helper SpringColor: BlueMaterial Composition: Polyurethane, IronLocation: Rear (Left / Right)Fitment Type: Direct OEM ReplacementOEM Part Numbers：SSR-117-40, SSR11740Application：Replacement for 2009-2021 Ford F-150 4WDDetails：Left-right pair includedMaintenance-free designBoosts load-carrying capacity1000 lbs load capacity at 50% compressionReduces and stabilizes vehicle swayEnhances overall driving control and ride comfortCompressible up to 80% of original height with full memory reboundSingle unit mounted on top/bottom stretches 50% of its body heightFeatures progressive spring rateIncluded in Package：2 x Air Helper Springs（As Pics Shown）

• 【1000LBS LOAD CAPACITY】This rear air helper spring provides 1000lbs load capacity at 50% compression, significantly boosting your truck's hauling and towing capability. Ideal for Ford F150 4WD owners who frequently carry heavy cargo or tow trailers.
• 【PROGRESSIVE RATE & SWAY REDUCTION】Engineered with a progressive spring rate, this suspension helper spring delivers smooth stiffness progression and outstanding shock absorption. It effectively minimizes body roll and stabilizes vehicle sway for enhanced driving control.
• 【MAINTENANCE-FREE LEAK-PROOF DESIGN】Crafted from advanced closed-cell microcellular polyurethane, this air helper spring requires no air lines or compressors. The leak-proof construction ensures reliable performance without routine maintenance.
• 【MEMORY REBOUND & HIGH COMPRESSIBILITY】This polyurethane helper spring compresses up to 80% of its original height while maintaining full memory rebound. A single unit mounted on top or bottom can stretch 50% of its body height for versatile suspension tuning.
• 【DIRECT FIT FOR FORD F150 4WD 2009-2021】This left-right pair serves as a direct OEM replacement (SSR11740) for Ford F150 4WD models 2009-2021. The iron and polyurethane construction ensures durability, making it perfect for work trucks and off-road applications.