Fits: 2011 thru 2024 Chevy Silverado/GMC Sierra 2500HD/3500HD LML/L5P Duramax Diesel

Each laser cut piece of steel is 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 axle to ensure unloaded ride quality.) Unlike other auxiliary spring systems, the SES Suspension Upgrade guarantees the best of both worlds.

GMRTT35D replaces the bumpstops on the rear suspension of the 2011-2022 GMC Sierra and Chevy Silverado 2500HD-3500HD pickup truck and cab and chassis models.

We recommend SES kits be used with a slide-in camper or salt spreader. In fact, any application that requires maximum stability (reducing roll and sway) calls for a SES upgrade.

This kit is rated at 8000 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.

Features:

• Made specifically for top-heavy applications that need maximum stability, like truck campers or salt spreaders
• Reduces sag, sway, and roll when hauling top-heavy loads
• Comfortable unloaded ride
• Easy installation
• No post-installation maintenance
• Can support up to 8,000 lbs

Inlcudes:

• 2 x Rubber spacers
• 2 x Mounting Brackets
• 2 x Patented Aeon SES suspensions (hollow rubber springs)
• All necessary hardware

Warranty: 

• Timbren SES kits are backed with a lifetime warranty.

Installation Guide