This SES Suspension Upgrade fits the front suspension of a Jeep Wrangler TJ, JK & JL. Each laser-cut piece of steel is precision welded 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 (weight from a snowplow or heavy aftermarket accessories such as a steel bumper) the harder they work to prevent front-end sag.
This SES Suspension Upgrade replaces the jounce stop inside the coil spring. Its unique design ensures superb ride quality loaded or unloaded. (There should be a 1/2" to 1" gap between rubber spring and axle to ensure unloaded ride quality.) Unlike other auxiliary spring systems, the SES Suspension Upgrade guarantees the best of both worlds.
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