Rear Suspension Enhancement System

This SES Suspension Upgrade fits the rear suspension of a Ford F-350 pickup truck & cab chassis. 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 1⁄2" to 1 1⁄2" gap between rubber spring and axle to ensure unloaded ride quality. Features Eliminate vehicle squatting & sagging. Cushion road shocks. Improve handling. Compatibility 1970-2004 F350 2WD/4WD Cab/Chassis. 2005-2012 F350 SD 2WD/4WD. Specifications Weight: 10 lbs.