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Hellwig LP-25 progressive-rate helper spring for 2011–2025 Ford F-250/F-350 and related F450/F550 applications provides up to 2,500 lbs of level load capacity. Intended for single rear-wheel multi-leaf setups, the kit requires the separate LP mounting kit for installation and may require removing factory contact overload springs or using Hellwig contact overload components. Easy to install, tunable and backed by a limited lifetime warranty.
Hellwig 11-21 Ford F-250 Load Pro- Up To 2500lb Level LC 3 Leaf Helper Spring w/o Mounting Kit
