Timbren GMRCK25D SES Rear Helper Spring Kit for 2011-2023 GM Full-Size 3/4- and 1-Ton Trucks

Upgrade rear suspension support with the Timbren GMRCK25D SES Helper Spring Kit, designed for select 2011-2023 GM full-size 3/4- and 1-ton trucks. This OEM-style, stock-height suspension enhancement system helps improve load support and vehicle stability without requiring air lines, compressors, or routine maintenance. The kit is engineered for dependable performance under demanding hauling and towing conditions while maintaining a straightforward installation approach.
Built with durable rubber components and finished in black, the Timbren SES kit provides progressive load support that engages as the vehicle is loaded. Its 8,600-pound capacity helps reduce rear-end sag, improve handling, and promote a more controlled ride when carrying heavy cargo or towing a trailer. The stock-height design preserves the vehicle’s original stance while adding supplemental support where it is needed most.
This complete rear helper spring kit includes the required mounting hardware for installation. The OEM-style configuration is designed specifically for GM full-size truck applications, helping ensure a proper fit when matched to the recommended vehicle specifications. Timbren’s maintenance-free SES technology is a practical alternative to traditional helper springs and air-assist systems for drivers seeking reliable suspension support.
Feature: Brand: Timbren
Feature: Part Number: GMRCK25D
Feature: Application: Rear suspension of select 2011-2023 GM full-size 3/4- and 1-ton trucks
Feature: Product Type: SES rubber helper spring kit
Feature: Design: OEM style with stock-height configuration
Feature: Capacity: Supports loads up to 8,600 pounds
Feature: Material: Durable rubber construction
Feature: Included: Mounting hardware
Feature: Finish: Black
Feature: Maintenance: No air lines or compressor required

Features:

• Brand: Timbren

• Part Number: GMRCK25D

• Application: Rear suspension of select 2011-2023 GM full-size 3/4- and 1-ton trucks

• Product Type: SES rubber helper spring kit

• OEM-style, stock-height design

• Supports loads up to 8,600 pounds

• Durable black rubber construction

• Mounting hardware included

• Maintenance-free suspension support

• No air lines or compressor required