Unstable loads while towing and hauling don’t just make for an uncomfortable ride. Difficult handling, rear sag, and corner sway create dangerous driving conditions for you, your passengers, and other vehicles. Whether you’re towing your RV across the country or hauling hay down the highway, the Timbren SES Suspension Enhancement Kit levels your load, making for a safe, controlled ride, so smooth, you might forget you’re towing altogether.
Aeon rubber springs deliver a progressive spring rate. As load increases, these rubber springs push back harder, eliminating squat, sway, and roll. After installation, there should be a 1/2″ to 1-1/2″ gap between the rubber spring and vehicle’s frame, meaning you’ll enjoy a comfortable unloaded ride, too.
What makes the Timbren SES Kit different from other suspension enhancement systems? Unlike air bags, this kit requires zero post-installation maintenance. And unlike other systems, you can install and haul in under 30 minutes, right from your driveway.
• Reduces sag, sway, and roll when towing and hauling
• Comfortable ride, loaded or unloaded
• DIY installation
• Zero post-installation maintenance
Specs
Rated Capacity: 8600 lbs.
Overall Kit Height: 6.25″
NOTE: 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.
What’s Included
Two patented Aeon SES suspensions (hollow rubber springs)
Two integrated rubber mounting spacers assembled with the SES suspensions
All necessary hardware
Fitment
Suspension Support Location: Rear Suspension
Kit Type: Standard Kit
2011-Present Chevrolet Silverado 2500 HD 2WD
2011-Present Chevrolet Silverado 2500 HD 4WD
2011-Present Chevrolet Silverado 3500 HD 2WD
2011-Present Chevrolet Silverado 3500 HD 4WD
2011-Present Chevrolet Silverado 3500 HD Cab and Chassis 2WD
2011-Present Chevrolet Silverado 3500 HD Cab and Chassis 4WD
1988-1999 GMC C2500
2011-Present GMC Sierra 2500 HD 2WD
2011-Present GMC Sierra 2500 HD 4WD
2011-Present GMC Sierra 3500 HD 2WD
2011-Present GMC Sierra 3500 HD 4WD
2011-Present GMC Sierra 3500 HD Cab and Chassis 2WD
2011-Present GMC Sierra 3500 HD Cab and Chassis 4WD
Before You Order
Verify part number GMRCK25D exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify GMRCK25D on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.
