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Your cart is empty."Each laser cut piece of steel is precision bent and powder-coated to ensure a quality fit. We’ve engineered our hollow rubber springs to deliver a progressive spring rate. In other words, the more weight that pushes down on the rubber springs the harder they work to prevent rear end sag. Whether you’re pulling a trailer or carrying a heavy load in the bed of your truck, our hollow rubber springs adjust automatically to keep the vehicle level at all times. This SES Suspension Upgrade replaces the jounce stop on the frame. Its unique design ensures superb ride quality – loaded or unloaded. (There should be a ½” to 1 ½” gap between rubber spring and frame to ensure unloaded ride quality.) Unlike other auxiliary spring systems, the SES Suspension Upgrade guarantees the best of both worlds. FR1504E replaces the bumpstops on the rear suspension of the 2015-2020 Ford F-150 2WD and 4WD pickup truck models. This kit is rated at 6000 lbs capacity. Even though you’re increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer."
Jason D Walling
Reviewed in the United States on August 17, 2023
Hauling a camper that is a little heavy. These really help keep my truck level (or more level). Really helps out with my handling. Since the geometry of the front end doesn’t change much (because it squats less) it handles so much better. Without the camper, there is about an inch and a half gap of normal suspension before these make contact. So normal driving is comfortable.
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