Timbren GMRG35 SES Helper Spring Kit for Rear GM Full-Size Vans, Stock Height

Upgrade rear suspension support with the Timbren GMRG35 SES Helper Spring Kit, designed for select GM full-size vans from 1975 through 2012. This OEM-style rear suspension enhancement kit installs at stock ride height and helps provide additional load support for vehicles that regularly carry passengers, equipment, or cargo. With a 3,600-pound capacity, it is engineered to improve handling and reduce suspension sag under load without requiring an air compressor or external controls.
The Timbren GMRG35 kit uses durable rubber helper springs that engage progressively as the vehicle is loaded. This design helps maintain a more controlled ride, improve stability, and reduce bottoming during demanding driving conditions. The rubber construction is suitable for drivers seeking a low-maintenance alternative to traditional air helper spring systems while retaining practical suspension support for daily use, work applications, and towing-related demands.
This rear SES kit includes the required mounting hardware for a straightforward installation on compatible GM full-size van applications. Its black finish provides a clean, discreet appearance beneath the vehicle, while the OEM-style configuration is designed to integrate with the factory suspension system. Verify vehicle application and suspension compatibility before ordering to ensure the Timbren GMRG35 is the correct replacement or upgrade for your van.

Features:

• Brand: Timbren

• Part Number: GMRG35

• Application: Rear suspension support for select GM full-size vans from 1975 through 2012

• Kit Type: SES helper spring kit

• Design: OEM-style, stock-height configuration

• Capacity: Supports loads up to 3,600 pounds

• Material: Durable rubber helper springs

• Finish: Black

• Installation: Mounting hardware included

• Operation: Passive load support without air lines, compressors, or external controls