Timbren SES Rear Suspension Enhancement System for 1999-2019 Chevrolet Silverado & GMC Sierra 1500 - GMRCK15S

Fits select 1999-2019 Chevrolet Silverado 1500 and GMC Sierra 1500 models, including Classic, HD, LD, and Limited variations. This Timbren SES (Suspension Enhancement System) kit replaces your factory rear bump stops with high-performance hollow rubber springs to eliminate vehicle squatting, sagging, and trailer sway under load.

The Timbren SES system is engineered for maintenance-free operation. Unlike air bags, these rubber cushions require no air lines, fittings, or manual pressure adjustments. They automatically adjust to uneven loads and road conditions, providing a progressive spring rate that remains soft when the truck is empty and becomes significantly firmer as the load increases. The bolt-on design utilizes existing factory mounting points for a straightforward installation that requires no drilling or specialized tools.

• Manufacturer Part Number: GMRCK15S
• Application: Rear suspension enhancement for RWD/4WD vehicles
• Material: Proprietary hollow rubber springs for shock absorption and load support
• Installation: Direct bolt-on; no drilling or air line routing required
• Maintenance: Maintenance-free design with no risk of leaks or punctures
• Performance: Reduces body roll and improves stability during towing or hauling
• Included: Pair of rubber springs and all necessary mounting hardware
• Warranty: Manufacturer lifetime warranty