Timbren SES Suspension Enhancement System #GMRCK25D [Rear Kit]
This SES Suspension Upgrade fits the rear suspension of Chevrolet Silverado 2500/3500 & GMC Sierra 2500/3500 trucks. 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 your GM 2500 or 3500 truck level at all times.