Fits select 2000-2020 Cadillac Escalade, Chevrolet Suburban, Tahoe, Avalanche, and GMC Yukon / Yukon XL models.

The Timbren SES (Suspension Enhancement System) GMRYS4 is a high-performance rear suspension upgrade engineered to eliminate vehicle squat and sagging under heavy loads. Utilizing proprietary rubber cushions, this system automatically adjusts to uneven loads and road conditions, ensuring a level ride and significantly improved handling whether you are towing a trailer or hauling heavy cargo. These kits are designed to replace the factory bump stops to provide additional support and stability.

Built for long-term reliability, the SES kit is completely maintenance-free. Unlike air-ride systems, there are no airlines to route, no fittings to leak, and no compressors to fail. The simple bolt-on design allows for a quick installation using basic hand tools, requiring no drilling into the vehicle frame.

• Eliminates vehicle squatting and sagging under load for a level ride height
• Cushions road shocks and reduces trailer sway for improved safety
• Simple bolt-on installation with no drilling or airlines required
• Progressive-rate rubber springs adjust automatically to load weight
• Maintenance-free design with no moving parts to service
• Manufacturer Part Number: GMRYS4
• Includes a lifetime warranty

Fits select 2011-2026 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD.

The Timbren SES (Suspension Enhancement System) GMRTT35D is designed to stabilize your heavy-duty truck under load while maintaining a smooth ride. This kit utilizes Aeon® hollow rubber springs that feature a progressive spring rate, meaning they automatically adjust to help eliminate vehicle squatting, sagging, and trailer sway. Unlike air bag systems, these cushions require no air lines, fittings, or ongoing maintenance.

This bolt-on upgrade replaces the factory bump stops, providing a significant increase in roll stability and load-carrying capacity without compromising empty ride quality. Installation is straightforward and requires no drilling, typically completed in minutes with basic hand tools.

• Manufacturer Part Number: GMRTT35D
• Eliminates rear end sag and squat under heavy loads
• Absorbs road shocks and improves overall handling
• Maintenance-free design with no air lines or leaks to worry about
• Direct bolt-on installation into factory mounting points
• High-quality progressive rate rubber springs
• Includes all necessary mounting hardware
• Lifetime Warranty

Fits select 1999-2019 Chevrolet Silverado 1500 and GMC Sierra 1500 models, including Classic, HD, LD, and Limited editions.

The Timbren SES (Suspension Enhancement System) GMRTT15S is designed to eliminate vehicle squat and sagging when hauling heavy loads or towing. By replacing the factory bump stops with high-performance hollow rubber springs, this system provides a progressive spring rate that automatically adjusts to uneven loads and road conditions. This results in significantly improved handling, reduced trailer sway, and increased stability without the complexity of air-based systems.

This kit features a simple bolt-on installation that utilizes existing factory mounting points, requiring no drilling or airline routing. Because there are no fittings or hoses to maintain, the system is completely leak-proof and maintenance-free, providing a reliable suspension solution for the life of your truck.

• Manufacturer Part Number: GMRTT15S
• Placement: Rear axle
• Construction: High-capacity hollow rubber cushions
• Installation: No-drill, bolt-on design using basic hand tools
• Maintenance: No airlines or fittings required
• Benefits: Eliminates squatting/sagging and cushions road shocks
• Warranty: Lifetime Warranty

Fits select 2019-2026 Chevrolet Silverado 1500 and GMC Sierra 1500 models.

The Timbren SES (Suspension Enhancement System) is designed to eliminate vehicle squat and sagging under heavy loads. This kit replaces the factory bump stops with high-performance Aeon hollow rubber springs, providing a progressive spring rate that automatically adjusts to uneven loads and road conditions. By absorbing road shocks and stabilizing the vehicle, it significantly reduces trailer sway and improves overall handling while towing or hauling.

Constructed for durability and ease of use, this system requires zero maintenance—there are no air lines to leak and no fittings to manage. Installation is a straightforward bolt-on process that uses factory mounting points with no drilling required. This specific kit, MPN GMRSTT15, provides a reliable alternative to air bags for drivers seeking a set-it-and-forget-it suspension solution.

• Eliminates vehicle squatting and sagging under load
• Progressive rate Aeon rubber springs cushion road shocks
• Simple bolt-on installation with basic hand tools; no drilling required
• No air lines or fittings to maintain or leak
• Improves stability and reduces trailer sway
• Manufacturer Part Number: GMRSTT15
• Includes a Lifetime Warranty

Fits select 2019-2026 Chevrolet Silverado 1500 and GMC Sierra 1500 models (including LTD and Limited variants). This Timbren Suspension Enhancement System (SES) is engineered to eliminate vehicle squat and sagging under heavy loads, providing a level ride and improved handling for towing and hauling.

The system features high-performance progressive-rate rubber springs that absorb road shocks and automatically adjust to uneven loads or road conditions. Unlike air bag systems, these cushions require no air lines, fittings, or ongoing maintenance. The GMRS15 bolts directly to existing factory mounting points using basic hand tools—no drilling or specialized equipment is required for installation.

• Eliminates vehicle squatting and sagging under heavy loads
• Reduces trailer sway and improves overall steering stability
• Maintenance-free design with no air lines or leaks to manage
• Simple bolt-on installation using factory holes (no drilling required)
• Manufacturer Part Number: GMRS15
• Includes a lifetime warranty

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

Fits select 2001-2010 Chevrolet Silverado 3500 and GMC Sierra 3500 models (Base, LS, LT, WT, Classic, and HD).

The Timbren SES (Suspension Enhancement System) GMRCK35C is a maintenance-free solution designed to eliminate vehicle squatting and sagging under heavy loads. By replacing the factory bump stops with high-performance progressive-rate rubber springs, this system provides additional support that automatically adjusts to load weight and road conditions. This kit is specifically engineered to improve stability and reduce trailer sway without the complexity of air lines or compressors.

• Eliminates rear-end sag and cushions road shocks for improved handling while hauling
• Progressive-rate rubber springs provide increased support as the load increases
• 100% bolt-on installation using basic hand tools with no drilling required
• Maintenance-free design with no air lines or fittings to leak or fail
• Manufacturer Part Number: GMRCK35C
• Includes all necessary brackets and hardware for a complete installation
• Backed by a lifetime warranty

Fits select 1999-2010 Chevrolet Silverado 1500, 1500 HD, 2500, 2500 HD and GMC Sierra 1500, 1500 HD, 2500, 2500 HD trucks.

The Timbren SES (Suspension Enhancement System) GMRCK25S is engineered to eliminate vehicle squatting, sagging, and trailer sway under heavy loads. Unlike air helper springs, this system utilizes Aeon hollow rubber springs that require no air lines, no fittings, and zero maintenance. The progressive spring rate of the rubber cushions automatically adjusts to uneven loads and road conditions, providing a smoother ride when loaded while maintaining factory ride quality when empty.

Installation is straightforward and requires no drilling or routing of air lines. This kit bolts directly to factory mounting points using basic hand tools, making it a reliable solution for improving towing stability and hauling capacity without the complexity of traditional air suspension systems.

• Manufacturer Part Number: GMRCK25S
• Eliminates rear-end sag and improves vehicle handling under load
• Aeon hollow rubber springs absorb road shock and dampen vibrations
• Maintenance-free design with no air lines to leak or fittings to fail
• Easy bolt-on installation with no drilling required
• Includes all necessary mounting hardware and instructions
• Backed by a Lifetime Warranty

Fits select 1988-1999 GMC C2500 and 2011-2026 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD.

The Timbren SES (Suspension Enhancement System) GMRCK25D is engineered to eliminate vehicle squat and sagging when hauling heavy loads or towing trailers. By replacing the factory bump stops with high-performance hollow rubber springs, this kit provides additional support and stability without compromising empty ride quality. Unlike air bag systems, these cushions are maintenance-free and automatically adjust to uneven loads or road conditions.

• Eliminates trailer sway and improves overall handling under load by providing progressive spring rates.
• Cushions road shocks to reduce wear and tear on the factory suspension components.
• True fit-and-forget design with no air lines, fittings, or compressors to leak or fail.
• Easy bolt-on installation using basic hand tools; no drilling or frame modification required.
• Includes high-performance rubber cushions and all necessary mounting hardware.
• Backed by a manufacturer's Lifetime Warranty.
• Manufacturer Part Number: GMRCK25D

Fits select 1988-2000 Chevrolet and GMC K1500, K2500, and Suburban models.

The Timbren SES (Suspension Enhancement System) GMRCK25 is engineered to eliminate vehicle squat and sagging under heavy loads. By replacing the factory bump stops with high-performance Aeon hollow rubber springs, this kit provides a progressive spring rate that automatically adjusts to keep your truck level and stable. This significantly reduces trailer sway and improves steering control without the complexity of traditional air bags.

Installation is a direct bolt-on process that requires no drilling or airline routing. These rubber cushions absorb road shocks and improve ride quality while preventing the suspension from bottoming out. Designed as a "fit it and forget it" solution, the system requires zero maintenance and features no fittings or lines to leak.

• Eliminates vehicle squatting and sagging under heavy cargo or trailer tongue weight
• Reduces trailer sway and improves overall handling and stability
• Maintenance-free design with no airlines or fittings to monitor
• Aeon hollow rubber springs provide a progressive spring rate for a smoother ride
• Simple bolt-on installation using basic hand tools
• Manufacturer Part Number: GMRCK25
• Lifetime Warranty

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

Fits 2015-2026 Chevrolet Colorado and GMC Canyon models. This Timbren SES (Suspension Enhancement System) kit replaces factory bump stops with heavy-duty hollow rubber springs to solve common hauling and towing issues. By providing a progressive spring rate, these cushions automatically adjust to uneven loads, eliminating rear-end squat, trailer sway, and suspension settling without compromising ride quality when empty.

The GMRCCA system is engineered for maximum reliability and ease of use. Unlike air spring kits, this system is maintenance-free with no airlines to route or fittings that can leak. The simple bolt-on design utilizes existing factory mounting points, requiring only basic hand tools for a no-drill installation. This kit ensures a level stance and improved vehicle handling while protecting your suspension from bottoming out under heavy loads.

• Part Number: GMRCCA
• Eliminates vehicle squatting and sagging under load
• Improves overall handling and trailer stability
• Maintenance-free design with no airlines or fittings
• Easy bolt-on installation with no drilling required
• Durable hollow rubber springs for progressive load support
• Lifetime manufacturer warranty

Fits select 1996-2020 Cadillac Escalade, Chevrolet Silverado/Tahoe/Suburban/Avalanche, GMC Sierra/Yukon, Hummer H2, and Mitsubishi Montero models.

The Timbren Suspension Enhancement System (SES) is engineered to improve vehicle stability and ride quality by providing additional support to the front suspension. These kits feature high-performance hollow rubber springs that act as a progressive load-leveler, absorbing road shocks and automatically adjusting to uneven loads. Unlike air bags, this system requires no airlines, no fittings, and zero maintenance, making it a reliable solution for vehicles that experience squatting or front-end sag.

Designed for a straightforward bolt-on installation, the GMFK25S kit replaces the factory bump stops and requires no drilling. The rubber cushions improve handling and reduce trailer sway by maintaining a level vehicle stance, even under heavy load conditions.

• Manufacturer Part Number: GMFK25S
• Eliminates vehicle squatting and sagging under load
• Progressive rate rubber springs cushion road shocks and improve stability
• Maintenance-free design with no airlines or fittings to leak
• Simple bolt-on installation using basic hand tools
• Durable construction designed to withstand harsh road conditions
• Includes all necessary mounting hardware

Fits select 2011-2026 Chevrolet Silverado 2500 HD/3500 HD and GMC Sierra 2500 HD/3500 HD trucks. This Timbren Suspension Enhancement System (SES) kit replaces the factory bump stops to provide superior load support and improved ride quality.

The Timbren GMFK25D uses high-performance hollow rubber springs that deliver a progressive spring rate. When the vehicle is empty, the springs do not engage, maintaining the factory ride. Under load, they compress to provide immediate support, eliminating front-end sag, reducing vehicle swaying, and cushioning road shocks. This front-end support is particularly effective for vehicles equipped with heavy accessories like snow plows or heavy-duty bumpers.

Installation is a straightforward bolt-on process that utilizes existing factory mounting points, requiring no drilling or airline routing. Unlike air bags, this SES kit is maintenance-free with no fittings to leak and no pressure to monitor.

• Eliminates front-end squat and sagging under heavy loads
• Improves overall handling and steering control
• Maintenance-free design with no airlines or compressors required
• Durable hollow rubber springs absorb road shocks and vibration
• Simple bolt-on installation using basic hand tools
• Manufacturer Part Number: GMFK25D
• Includes a lifetime warranty

Fits select 2007-2015 Chevrolet Silverado 1500 and GMC Sierra 1500 models.

The Timbren SES (Suspension Enhancement System) GMFK15CA is designed to improve front-end stability and ride quality by replacing the factory bump stops with high-performance hollow rubber springs. These cushions provide a progressive rate of assistance, automatically adjusting to uneven loads and road conditions to eliminate front-end squatting and sagging while cushioning road shocks.

This maintenance-free system is ideal for vehicles equipped with heavy front-end equipment like snow plows or winch bumpers. The bolt-on design requires no drilling and no air lines, ensuring a reliable, leak-free installation using basic hand tools in a matter of minutes.

• Manufacturer Part Number: GMFK15CA
• Eliminates vehicle front-end squatting and sagging
• Progressive rate rubber springs for improved handling and trailer sway control
• Simple bolt-on installation; no drilling or air lines required
• Maintenance-free "fit and forget" design
• Lifetime warranty provided by manufacturer

Fits select 1986-2026 Ford, Nissan, Mazda, INFINITI, Mercury, and Suzuki trucks, SUVs, and vans.

The Timbren SES (Suspension Enhancement System) FXF1004A is engineered to improve ride quality and vehicle stability by replacing factory bump stops with heavy-duty hollow rubber springs. These progressive cushions automatically adjust to road conditions and varying loads, providing immediate support to the front suspension to eliminate squatting and sagging. By absorbing road shocks, this kit reduces trailer sway and improves overall steering control and handling.

Designed for maximum reliability, the SES kit is completely maintenance-free. Unlike air-ride systems, there are no airlines to route, no fittings to leak, and no manual pressure adjustments required. The FXF1004A features a simple bolt-on installation that utilizes existing factory holes, allowing for a quick setup using basic hand tools without the need for drilling.

• Manufacturer Part Number: FXF1004A
• Eliminates vehicle squatting and sagging under heavy loads
• High-performance hollow rubber springs absorb road shocks and vibrations
• Improves steering stability and reduces trailer sway
• Maintenance-free design with no airlines or valves
• Easy bolt-on installation into factory mounting points
• No drilling or specialized tools required
• Lifetime Warranty

Fits the 2015 Ford F-550 Super Duty.

The Timbren SES (Suspension Enhancement System) FRTTSDE is designed to eliminate vehicle squat, sagging, and trailer sway under heavy load. Utilizing high-performance hollow rubber springs, this system provides a progressive spring rate that automatically adjusts to uneven loads and road conditions. Unlike air bag systems, there are no air lines to route, no compressors to maintain, and no risk of leaks or pressure loss.

This maintenance-free upgrade replaces the factory bump stops to provide additional support and stability during towing or hauling. The bolt-on design allows for a straightforward installation using basic hand tools, utilizing existing mounting points with no drilling required. Experience improved handling and reduced road shock without compromising empty ride quality.

• Manufacturer Part Number: FRTTSDE
• Eliminates rear-end sag and improves vehicle stability
• Progressive rate hollow rubber springs for automatic load adjustment
• Maintenance-free design with no air lines or fittings
• Easy bolt-on installation with no drilling required
• Cushions road shocks and reduces trailer sway
• Manufacturer Lifetime Warranty

Fits 2017-2026 Ford F-250 and F-350 Super Duty (King Ranch, Lariat, Limited, Platinum, XL, XLT).

The Timbren SES (Suspension Enhancement System) FRTT350J is a maintenance-free solution designed to eliminate vehicle squat, sagging, and trailer sway. Using high-performance Aeon rubber springs, this kit provides a progressive spring rate that automatically adjusts to heavy loads and uneven road conditions. Unlike air-ride systems, these rubber cushions require no air lines, fittings, or monitoring, providing a reliable "set it and forget it" upgrade for towing and hauling.

• Direct Bolt-On: Easy installation using basic hand tools with no drilling or air line routing required.
• Progressive Spring Rate: Rubber cushions absorb road shocks and provide increased support as the load increases.
• Zero Maintenance: Durable rubber construction with no moving parts or air pressure to maintain.
• Improved Stability: Significantly reduces body roll and improves overall handling while towing heavy trailers.
• Lifetime Warranty: Built for long-term durability and backed by a manufacturer lifetime warranty.
• Manufacturer Part Number: FRTT350J

This kit replaces the factory bump stops, acting as a secondary suspension to ensure your truck remains level and stable under load.

Fits select 1975-2016 Ford F-350 and 2005-2016 F-250 Super Duty.

Upgrade your heavy-duty truck's load-carrying capacity with the Timbren Suspension Enhancement System (SES). Designed to eliminate vehicle squatting, sagging, and trailer sway, this kit utilizes high-performance Aeon hollow rubber springs to provide a progressive spring rate. These cushions automatically adjust to uneven loads and road conditions, absorbing road shocks and improving overall handling whether you are hauling a heavy payload or towing a trailer.

The SES kit is designed for maximum reliability with zero maintenance required; unlike air sleeve helpers, there are no air lines to route, no fittings to leak, and no pressure to monitor. The bolt-on installation is straightforward, typically requiring only basic hand tools and no drilling, making it an ideal solution for fleet vehicles and work trucks.

• Eliminates vehicle squat and sagging under heavy loads
• Improves roll stability and reduces trailer sway
• Maintenance-free design with no air lines or compressors
• Aeon progressive rate rubber springs for superior ride quality
• Simple bolt-on installation with no drilling required
• Includes all necessary mounting hardware
• Manufacturer Part Number: FRTT350F
• Lifetime Warranty

Fits select 1970-2004 Ford F-250 and F-350 trucks, including F-250 HD and Super Duty variants. This Timbren Suspension Enhancement System (SES) is engineered to eliminate vehicle squatting, sagging, and trailer sway by providing a progressive spring rate that adjusts to the load.

Instead of relying on complex air systems, the FRTT350E utilizes high-performance hollow rubber cushions that absorb road shocks and improve overall handling. This kit replaces the factory bump stops, providing additional support that remains out of the way when the vehicle is unloaded, maintaining your factory ride quality. Under load, the rubber springs compress to provide the stability and leveled stance needed for safe towing and hauling.

• Eliminates Sag and Sway: Automatically adjusts to uneven loads for a level, stable ride.
• Maintenance-Free Design: No air lines, gauges, or fittings to leak or fail.
• No-Drill Installation: Bolts directly to factory mounting points using basic hand tools.
• Heavy-Duty Construction: Built from high-grade rubber to withstand harsh road conditions.
• Manufacturer Part Number: FRTT350E
• Included: All necessary mounting hardware and rubber spring assemblies.

Fits select 2015-2025 Ford F-150 models, including XL, XLT, Lariat, King Ranch, Platinum, Limited, Raptor, Tremor, and STX.

Upgrade your truck's hauling and towing performance with the Timbren FRTT1504E SES (Suspension Enhancement System). Designed to replace factory bump stops, this kit features Aeon hollow rubber springs that provide a progressive spring rate. When empty, the springs do not affect ride quality; when loaded, they compress to eliminate rear-end sag, reduce trailer sway, and improve overall vehicle stability.

Unlike air helper springs, Timbren SES kits are completely maintenance-free with no air lines to leak or fittings to monitor. The bolt-on design allows for a straightforward installation using basic hand tools with no drilling required. This system is engineered to handle heavy cargo and improve handling under load while providing a lifetime of reliable service.

• Eliminates Squat: Prevents rear-end sagging when towing trailers or carrying heavy bed loads.
• Maintenance-Free: No air lines or pressure to monitor; simply bolt on and go.
• Hands-on Install: Easy DIY installation using existing factory mounting points; no drilling needed.
• Progressive Rate: Hollow rubber cushions automatically adjust to the load weight.
• Included: Complete rear kit including rubber springs, steel brackets, and all necessary hardware.
• MPN: FRTT1504E
• Warranty: Manufacturer lifetime warranty included.

Fits select 2004-2014 Ford F-150 and 2006-2008 Lincoln Mark LT.

The Timbren Suspension Enhancement System (SES) is engineered to eliminate vehicle squatting and sagging while improving overall handling under load. Unlike air-ride systems, Timbren SES kits use high-durometer hollow rubber springs that provide a progressive spring rate—automatically adjusting to uneven loads and road conditions without the need for airlines, fittings, or compressors. This maintenance-free design ensures a reliable, leak-proof solution for trucks used for towing or hauling heavy payloads.

Installation is straightforward and requires no drilling or specialized tools; the system typically bolts directly to factory mounting points in a matter of minutes. By absorbing road shocks and reducing trailer sway, this kit significantly increases stability and driver confidence.

• Manufacturer Part Number: FRTT1502D
• Includes two high-performance hollow rubber springs and all necessary mounting hardware
• Maintenance-free design with no airlines or fittings to leak
• Easy bolt-on installation with no drilling required
• Reduces rear-end sag and vehicle squat under heavy loads
• Provides a smoother ride by cushioning road shocks
• Limited Lifetime Warranty

Fits 2015 Ford F-550 Super Duty Base models.

The Timbren SES (Suspension Enhancement System) FRSDE is engineered to eliminate vehicle squat, sag, and trailer sway under heavy loads. Utilizing high-performance hollow rubber springs, this kit provides a progressive spring rate that automatically adjusts to road conditions and load weight, ensuring a level ride and improved handling without the complexity of traditional air systems. Designed as a maintenance-free alternative to air bags, this system features no airlines or fittings to leak, providing a reliable "fit and forget" solution for heavy-duty hauling.

• Eliminates vehicle squatting and sagging while towing or hauling
• Maintenance-free design with no airlines, compressors, or fittings
• Easy bolt-on installation using factory mounting points; no drilling required
• Hollow rubber cushions absorb road shocks and improve ride quality
• Provides additional stability to reduce trailer sway and body roll
• Manufacturer Part Number: FRSDE
• Lifetime Warranty

Fits the 1997 Ford F53 motorhome chassis (Rear).

The Timbren SES (Suspension Enhancement System) is a maintenance-free solution designed to eliminate vehicle squatting, sagging, and body roll. This kit features Aeon® hollow rubber springs that provide a progressive spring rate, automatically adjusting to uneven loads and road conditions to improve overall handling and stability while towing or hauling heavy gear.

Engineered for durability and ease of use, this system replaces the factory bump stops with high-performance rubber cushions that absorb road shocks and reduce trailer sway. Because there are no air lines, fittings, or compressors required, the system is completely leak-proof and requires zero maintenance after installation.

• Eliminates vehicle squat and sagging under heavy loads
• Improves handling and reduces trailer sway for added safety
• Hollow rubber springs cushion road shocks for a smoother ride
• Simple bolt-on installation with no drilling or air lines required
• Maintenance-free design with no moving parts or pressurized air
• Manufacturer Part Number: FRF53A
• Includes a lifetime warranty from Timbren

Fits 2000-2005 Ford Excursion (Eddie Bauer, Limited, XLS, and XLT).

The Timbren FREXC4 Suspension Enhancement System (SES) is designed to improve the load-carrying capacity and ride stability of your Ford Excursion. By utilizing high-performance rubber cushions that absorb road shocks and automatically adjust to uneven loads, this kit eliminates vehicle squat and sagging while reducing trailer sway. Unlike air-assisted systems, the SES requires no air lines, no fittings, and no ongoing maintenance, providing a reliable "set it and forget it" solution for heavy towing and hauling.

• Precision Engineering: Rubber spring technology provides a progressive spring rate to cushion road shocks and improve overall handling.
• Simple Installation: Direct bolt-on design requires no drilling and no air line routing; installs in minutes with basic hand tools.
• Durable Construction: Built to withstand harsh road conditions without the risk of leaks or mechanical failure.
• Maintenance-Free: No moving parts or air pressure to monitor for the life of the vehicle.
• Manufacturer Part Number: FREXC4
• Included: Rear rubber springs and all necessary mounting hardware.
• Warranty: Lifetime Warranty.