Timbren Rear Suspension Enhancement System for 2011-2026 Silverado/Sierra 2500HD 3500HD - GMRCK25DM1.5

Key Features & Specs:

• Part Number: GMRCK25DM1.5
• Brand: Timbren
• Product Type: Suspension Enhancement System
• Location: Rear Suspension
• Kit Type: Standard Kit
• Rated Capacity: 8,600 lbs
• Overall Kit Height: 6.25 in
• Spring Type: Patented Aeon® hollow rubber springs
• Benefits: Reduces sag, sway, and roll when towing and hauling
• Ride Quality: Comfortable ride loaded or unloaded
• Installation: DIY installation
• Maintenance: Zero post-installation maintenance
• Variant Note: Custom spec version of the GMRCK25D kit
• What’s Included: 2 x Patented Aeon® SES suspensions (hollow rubber springs)
• What’s Included: 2 x Integrated rubber mounting spacers (assembled with SES suspensions)
• What’s Included: All necessary hardware

Fitment:

• 2011-2026 Chevrolet Silverado 2500 HD 2WD
• 2011-2026 Chevrolet Silverado 2500 HD 4WD
• 2011-2026 Chevrolet Silverado 3500 HD 2WD
• 2011-2026 Chevrolet Silverado 3500 HD 4WD
• 2011-2026 Chevrolet Silverado 3500 HD Cab & Chassis 2WD
• 2011-2026 Chevrolet Silverado 3500 HD Cab & Chassis 4WD
• 2011-2026 GMC Sierra 2500 HD 2WD
• 2011-2026 GMC Sierra 2500 HD 4WD
• 2011-2026 GMC Sierra 3500 HD 2WD
• 2011-2026 GMC Sierra 3500 HD 4WD
• 2011-2026 GMC Sierra 3500 HD Cab & Chassis 2WD
• 2011-2026 GMC Sierra 3500 HD Cab & Chassis 4WD

The Timbren GMRCK25DM1.5 Suspension Enhancement System is engineered to provide heavy-duty rear suspension support for 2011-2026 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD trucks. Designed as a custom-spec variant of the GMRCK25D kit, this system uses Timbren’s patented Aeon® hollow rubber springs to automatically engage under load, reducing rear-end sag, sway, and body roll during towing or hauling. The system improves stability while maintaining ride comfort whether the truck is loaded or unloaded. With a simple DIY installation and zero post-installation maintenance required, this kit provides dependable load support for work trucks and heavy-duty applications.