Timbren SES Rear Suspension Enhancement System for Select 1996-2021 Cadillac, Chevrolet, and GMC (GMRG25C)

Fits select 1996-2021 Cadillac Escalade, Chevrolet Avalanche, Express, Suburban, and Tahoe, and GMC Savana, Yukon, and Yukon XL.

The Timbren SES (Suspension Enhancement System) GMRG25C is engineered to eliminate vehicle squatting and sagging under heavy loads. Utilizing proprietary Aeon hollow rubber springs, this kit provides a progressive spring rate that automatically adjusts to uneven loads and road conditions. This design absorbs road shocks, reduces trailer sway, and improves overall handling stability without compromising ride quality.

This maintenance-free system replaces the factory bump stops with a durable, bolt-on solution. Unlike air-assisted systems, the Timbren SES has no airlines or fittings to leak, making it a reliable choice for heavy-duty towing and hauling. Installation is straightforward, using basic hand tools and factory mounting points with no drilling required.

• Manufacturer Part Number: GMRG25C
• Material: High-performance Aeon hollow rubber springs
• Installation: Direct bolt-on to factory mounting points; no-drill design
• Maintenance: Zero maintenance; no air pressure to monitor or lines to route
• Features: Progressive spring rate; eliminates squat and improves load leveling
• Includes: Pair of Aeon rubber springs and all necessary mounting hardware
• Warranty: Manufacturer's Lifetime Warranty