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The Hellwig Contact Helper Spring kit for 2017–2021 Ford F-450 models with factory contact overload springs adds two additional leaves to improve load support. As the vehicle is loaded the helper engages sooner, stiffening the overload springs to reduce sag and raise level-load carrying capacity. The kit attaches directly to factory contact springs for an uncomplicated installation and more robust heavy-load handling.
Hellwig 17-21 Ford F-450 Helper Spring Kit w/ Factory Contact Overload Springs - 2 Additional Leaves
