The Hellwig EZ-990 helper spring kit for 2009–2014 Ford F-150 (2WD/4WD) adds medium-duty rear load support for light towing and hauling. The bolt-on kit ships with powder-coated and plated components, heavy-duty U-bolts, hardware and instructions for simple hand-tool installation. Tunable up to 2,000 lb of level load capacity, its heat-treated ASTM 5160 alloy spring steel construction lets you adjust for uneven side-to-side loads and regain stability while towing.
Hellwig 09-14 Ford F-150 2/4WD EZ Level 990 Helper Spring - Up To 2000lbs