Timbren Suspension Enhancement System - Rear Axle Kit - fits 2011 - Present Silverado and Sierra 2500 & 3500

The Timbren Suspension Enhancement System is designed to enhance a vehicle's empty ride quality while providing protection against overloading. The cushions absorb road shock while automatically adjusting to uneven loads and rough road conditions.

Easy install - No holes to drill, or airlines to route. "S.E.S" kits typically install in less than 30 minutes with the use of basic tools. See installation instructions link below for more information.

This SES Suspension Upgrade replaces the bumpstops on the frame. Its unique design ensures superb ride quality loaded or unloaded. (There should be a to 1 gap between the rubber spring and axle to ensure unloaded ride quality.) Unlike other auxiliary spring systems, the SES Suspension Upgrade guarantees the best of both worlds.

GMRCK25D replaces the bumpstops on the rear suspension of the 2011-Present GMC Sierra and Chevy Silverado 2500HD and 3500HD pickup truck models.

This kit is rated at 8600 lbs capacity. Even though youre increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating) of your GM 2500 or 3500 truck. Please make sure that the load does not exceed the GVWR set by the manufacturer.

• Reduces sway - adds roll stability
• Excellent for stabilizing large in-bed loads - Eliminates suspension sag