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Timbren
Timbren SES Suspension Enhancement System #FF550SDE [Front Severe Service Kit]
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This SES Suspension Upgrade fits the front suspension of a Ford F-450 & F550 pickup or cab & chassis truck. 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.