Fits: 2011–2022 Ford F-250 Super Duty 2011–2022 Ford F-350 Super Duty 2016 Ford Explorer 2016 Ford Expedition 2016 Ford Police Interceptor Utility 2016 Ford Escape 2016 Ford F-150 Hellwig3511Leaf Springs & AccessoriesThe Hellwig LP-35 Helper Spring set the standard for all other aftermarket helper springs. Featuring a Fulltime Spring Rate design it is the workhorse of the Hellwig Spring line. This is ideal for fleet applications or vehicles that consistently carry a heavy load day in and day out.Hellwig LP-35 helper spring kits are fully adjustable to ensure improved side-to-side leveling control. Made from high-quality alloy spring steel, hot-formed and heat-treated for strength and durability, these suspension helper springs can virtually eliminate sagging. Featuring a 4-leaf stack with a 3,500 lb. level load capacity, LP-35 springs offer the maximum in carrying capacity and are recommended for 3/4 and 1 ton applications. An installation kit (sold separately) is required for most models. Order the spring kit tailored for fitment on your specific vehicle.