(Ras®) Roadactive Suspension 3611-Yhd | Fits Ford F150 4Wd 2009-2023

Heavy Duty(Hd) Rear Leaf Spring Upgrade By Roadactive Suspension Designed To Enable Improved Towing Capability, Comfort And Everyday Performance Without Hassle. Suspension Kit Comes As Set Of Variable Rated Tension Coil Spring Designed To Strengthen Existing Leaf Springs By An Additional 40-50% Over Stock Factory Leaf Springs. The Mechanically Active Suspension Works To Maintain The Arch In The Existing Leaf Springs And Engage Proportionate To Force Or Weight That Is Applied, Absorbing And Dissipating Load Force Energy. The Unique Design Helper Spring Provides Greatly Improved Stability, Increased & Improved Load Carrying Capabilities, Reduction In Rear Squat, Reduced Bounce, Improved Traction And Driver Control. Roadactive Suspension Guarantees 100% Ride Comfort And Maximum Performance, With Or Without Load. Once Installed With Proper Tension Setting, No Adjustments Necessary. Heavy Duty Kit Ideal For Most Towing And Hauling Applications Or With +2” Of Squat While Loaded.