Timbren Industries Rear Severe Service Suspension Enhancement System

The Timbren Rear Severe Service Suspension Enhancement System (SES) is a rear helper spring kit that uses hollow rubber springs, also called auxiliary springs or jounce-style bump stops. It reduces rear-end sag and squat when you tow trailers or carry heavy loads. Each kit is built for severe-duty use, such as slide-in campers, in-bed salt spreaders, and heavy trailers.

Key Features:

• Progressive spring rate: the more weight pushes down on the springs, the harder they work to resist sag.
• Independent spring action: each side works on its own, which helps with off-center loads and reduces body roll in turns.
• Better ride and handling: the rubber springs absorb road shock and help keep the vehicle level and stable.
• Axle protection: they cushion heavy loads to help prevent bottoming out and add support to the rear suspension.
• Ride height: unlike add-a-leaf solutions, the kit does not change the unloaded ride height.
• Durable construction: precision-bent, powder-coated steel brackets hold the hollow rubber springs.
• Simple installation: the kit bolts to existing attachment points with no drilling, and most installs need only basic hand tools.
• Lifetime warranty: Timbren backs its SES kits with a lifetime warranty.

Each kit is engineered for its specific application and includes the mounting brackets and hardware needed for installation. Fitting a Timbren SES kit does not increase the vehicle's GVWR.