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.

Fits 2005-2026 Ford F-350 Super Duty (Lariat, XL, XLT) models.

The Timbren Suspension Enhancement System (SES) is engineered to provide superior load support and stability for your Ford truck. Designed to replace the factory bump stops, these progressive-rate rubber cushions absorb road shocks and automatically adjust to uneven loads or difficult road conditions. This system effectively eliminates vehicle squat and sagging under heavy trailers, reducing sway and improving overall handling without the complexity of air suspension.

• Maintenance-free design with no air lines, fittings, or compressors to leak
• Hollow rubber springs provide a progressive spring rate for a smooth ride loaded or unloaded
• Easy bolt-on installation using factory mounting points; no drilling required
• Prevents suspension bottoming out and reduces trailer sway
• Includes all necessary mounting hardware and installation instructions
• Manufacturer Part Number: FR350TTCC
• Lifetime Warranty

Vehicle Fitment

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

The Timbren Suspension Enhancement System (SES) is engineered to eliminate vehicle squat and sagging under heavy loads. Utilizing high-performance hollow rubber springs, this kit provides a progressive spring rate that automatically adjusts to uneven loads and road conditions. By absorbing road shocks and improving stability, the SES kit reduces trailer sway and enhances overall handling for a safer towing and hauling experience.

The FR350SDJ kit is a maintenance-free, bolt-on solution. Unlike air bag systems, there are no air lines to route, no fittings to leak, and no manual pressure adjustments required. This system installs in minutes using basic hand tools and requires no drilling into the vehicle frame.

• Manufacturer Part Number: FR350SDJ
• Eliminates vehicle squatting and sagging under load
• Cushions road shocks and improves stability for better handling
• Maintenance-free design with no air lines or fittings to leak
• Easy bolt-on installation with no drilling required
• High-performance progressive rate rubber springs
• Lifetime warranty

Fits select 1975-2016 Ford F-350 and F-350 Super Duty trucks across various trims including XL, XLT, Lariat, and King Ranch.

The Timbren SES (Suspension Enhancement System) kit FR350SDF is engineered to significantly improve rear suspension performance when hauling heavy loads or towing trailers. This system utilizes high-performance hollow rubber springs that replace the factory bump stops to provide additional support and stability. By absorbing road shocks and automatically adjusting to uneven loads, these rubber cushions eliminate vehicle squatting, sagging, and excessive trailer sway.

Built for reliability and ease of use, this SES kit is completely maintenance-free with no air lines to route or fittings to leak. The progressive spring rate ensures a smooth ride whether the vehicle is loaded or empty. Installation is a straightforward bolt-on process that requires no drilling and can be completed using basic hand tools.

• Eliminates rear-end sag and vehicle squatting under heavy loads
• Improves overall handling, stability, and trailer sway control
• Progressive rate rubber springs provide a smoother ride quality
• Maintenance-free design with no air lines or compressors required
• Simple bolt-on installation into factory mounting points
• Manufacturer Part Number: FR350SDF
• Includes a Lifetime Warranty

Fits select 1970-2004 Ford F-250 HD and F-350 / F-350 Super Duty.

The Timbren SES (Suspension Enhancement System) is a heavy-duty solution designed to eliminate vehicle squat and sagging under heavy loads. This rear suspension kit replaces the factory bump stops with high-performance rubber springs that provide additional support and stability without the maintenance requirements of traditional air bags. Unlike air systems, there are no air lines to route or fittings to leak, making this a fit-and-forget solution for towing and hauling.

By absorbing road shocks and automatically adjusting to uneven loads, this system significantly reduces trailer sway and improves overall vehicle stability. The progressive rate of the rubber springs ensures a smooth ride quality when empty while providing firm support when loaded. Installation is a straightforward bolt-on process using basic hand tools, requiring no drilling into the vehicle frame.

• Eliminates vehicle squatting and sagging under heavy loads
• Improves handling and reduces trailer sway for safer towing and hauling
• Maintenance-free design with no air lines, fittings, or compressors
• Straightforward bolt-on installation into factory mounting points; no drilling required
• Durable rubber cushions absorb road shocks and improve ride stability
• Manufacturer Part Number: FR350SDE
• Backed by a Limited Lifetime Warranty

Fits select 2017-2026 Ford F-250 Super Duty King Ranch, Lariat, Limited, Platinum, XL, and XLT models.

The Timbren FR250SDJ Suspension Enhancement System (SES) is a maintenance-free solution designed to eliminate vehicle squat, sagging, and trailer sway. Built with high-performance hollow rubber cushions, this kit provides progressive spring rates that automatically adjust to uneven loads and road conditions. Unlike air-ride systems, the SES requires no airlines, compressors, or fittings, ensuring a leak-proof setup that performs reliably for the life of the vehicle.

This kit replaces the factory bump stops, providing immediate support when the vehicle is under load while maintaining a factory ride quality when empty. The bolt-on design utilizes existing mounting points for a straightforward installation that requires no drilling or specialized tools.

• Eliminate Rear-End Sag: Prevents vehicle squatting under heavy tongue weights or bed loads.
• Maintenance-Free: No airlines, gauges, or fittings to leak or maintain.
• Durable Construction: Rubber springs absorb road shocks and improve overall handling and stability.
• Easy Installation: Bolt-on design requires no drilling and installs with basic hand tools.
• Manufacturer Part Number: FR250SDJ
• Warranty: Lifetime Manufacturer Warranty

Fits 2011-2016 Ford F-250 Super Duty models (XL, XLT, Lariat, King Ranch, and Platinum).

The Timbren SES (Suspension Enhancement System) FR250SDG is a performance-engineered rear suspension upgrade designed to eliminate vehicle squat and improve handling under heavy loads. Unlike air-ride systems, these hollow rubber springs are maintenance-free, featuring no air lines or fittings that can leak over time. They provide a progressive spring rate, remaining out of contact with the axle during unladen driving to preserve factory ride quality, while automatically engaging to support heavy tongue weights and payloads.

This kit is a direct bolt-on solution that replaces the factory bump stops. Installation is straightforward and requires only basic hand tools with no drilling or vehicle modifications necessary. By reducing trailer sway and cushioning road shocks, the SES system ensures a more stable, controlled, and level towing experience for your F-250 Super Duty.

• Manufacturer Part Number: FR250SDG
• Position: Rear
• Material: High-performance hollow rubber springs
• Installation: Simple bolt-on design; no drilling or air lines required
• Performance: Eliminates sagging, reduces trailer sway, and cushions road shock
• Maintenance: Maintenance-free operation for the life of the vehicle
• Warranty: Lifetime Warranty

Fits select 2005-2010 Ford F-250 Super Duty (Cabela's, FX4, Harley-Davidson Edition, King Ranch, Lariat, XL, and XLT).

The Timbren Suspension Enhancement System (SES) FR250SDF is engineered to eliminate vehicle squatting and sagging under heavy loads. Featuring Aeon progressive-rate hollow rubber springs, this system absorbs road shocks and automatically adjusts to uneven loads or challenging road conditions. Unlike air spring systems, the FR250SDF requires no airlines or fittings, providing a completely maintenance-free solution for your truck's suspension.

This kit is designed for a straightforward, no-drill installation that bolts directly to factory mounting points using basic hand tools. By replacing the factory bump stops, the high-performance rubber springs significantly reduce trailer sway and improve overall handling and stability when towing or hauling.

• Eliminates rear-end sag and trailer sway
• Progressive rate Aeon rubber springs cushion road shocks
• Maintenance-free design with no airlines or fittings to leak
• Easy bolt-on installation; no drilling required
• Includes all necessary hardware for installation
• Lifetime Manufacturer Warranty
• Manufacturer Part Number: FR250SDF

Fits select 1970-2004 Ford F-100, F-150, F-250, F-250 HD, and F-250 Super Duty models.

The Timbren SES (Suspension Enhancement System) FR250SDE is engineered to eliminate vehicle squat and sagging while significantly improving handling and stability. These high-performance suspension packages utilize hollow rubber springs that provide a progressive rate, automatically adjusting to uneven loads and changing road conditions. Unlike air-based systems, these cushions require no air lines, no fittings, and zero maintenance, ensuring a leak-proof and trouble-free service life.

The bolt-on design allows for a simple installation into factory mounting points using basic hand tools, with no drilling or air line routing required. By absorbing road shocks and reducing trailer sway, this system provides a more controlled ride and peace of mind when towing or hauling heavy payloads.

• Eliminates rear-end squat and sagging under heavy loads
• Improves vehicle handling and reduces trailer sway
• Maintenance-free design with no air lines or gauges required
• Durable hollow rubber springs cushion road shocks and vibration
• Simple, no-drill bolt-on installation using basic hand tools
• Manufacturer Part Number: FR250SDE
• Backed by a Lifetime Warranty

Fits select 1997-2004 Ford F-150, F-150 Heritage, F-250, F-250 HD, and F-250 Super Duty.

The Timbren SES (Suspension Enhancement System) FR1525HD is engineered to eliminate vehicle squat and sagging under heavy loads. By replacing the factory bump stops with high-performance rubber springs, this kit provides additional support that automatically adjusts to uneven loads and road conditions. This design significantly reduces trailer sway and improves overall handling and stability without compromising ride quality.

Built for reliability, these SES kits feature a maintenance-free design with no airlines or fittings to leak or fail. The bolt-on installation is straightforward, utilizing existing factory mounting points so no drilling is required. This system is an ideal solution for drivers seeking to improve towing safety and peace of mind on 10th-generation Ford F-Series trucks.

• Eliminates vehicle squatting and sagging under heavy loads
• Cushions road shocks and improves loaded ride quality
• Easy bolt-on installation with no drilling or airlines required
• Maintenance-free design with no leaks or plumbing
• Manufacturer Part Number: FR1525HD
• Lifetime Warranty

Fits 2021-2025 Ford F-150 Raptor.

The Timbren SES (Suspension Enhancement System) FR150RC is a maintenance-free solution designed to eliminate vehicle squat, sagging, and trailer sway under load. These progressive-rate rubber springs replace the factory bump stops to provide additional support when towing or hauling, without compromising ride quality when empty. The rubber cushions absorb road shocks and automatically adjust to uneven loads or road conditions to improve overall handling and safety.

• Direct bolt-on installation using basic hand tools with no drilling required
• Maintenance-free design with no air lines, fittings, or pressure to monitor
• Progressive spring rate provides support that increases as the load increases
• Eliminates rear-end sag and improves stability while towing
• Constructed with high-quality rubber springs for long-term durability
• Includes all necessary mounting hardware for a complete install
• Manufacturer Part Number: FR150RC
• Lifetime Warranty

Fits 2017-2023 Ford F-150 Raptor models. Designed to eliminate rear-end sag and improve stability, the Timbren SES (Suspension Enhancement System) is a durable, maintenance-free solution for your Raptor's suspension needs. By utilizing progressive-rate rubber springs, this kit provides additional support for heavy loads or towing without compromising the empty ride quality.

The FR150RB system replaces the factory bump stops with high-performance rubber cushions that absorb road shocks and automatically adjust to uneven loads. Unlike air bags, this system requires no airlines, no gauges, and no compressors, making it a reliable set-it-and-forget-it upgrade. Installation is a straightforward bolt-on process that requires only basic hand tools and no drilling into your truck's frame.

• Eliminates vehicle squatting, sagging, and trailer sway
• Progressive rubber spring technology cushions road shocks
• Maintenance-free design with no airlines or fittings to leak
• Simple bolt-on installation with no drilling required
• Manufacturer Part Number: FR150RB
• Includes all necessary mounting hardware
• Lifetime Warranty

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

The Timbren SES (Suspension Enhancement System) FR1504E is a heavy-duty rear suspension upgrade engineered to eliminate vehicle squat, sagging, and trailer sway. Unlike traditional air bag systems, these high-performance hollow rubber springs are maintenance-free, requiring no air lines, fittings, or monitoring. They feature a progressive spring rate that automatically adjusts to the load, providing a smooth ride when unloaded and firm, stable support when hauling heavy cargo or towing trailers.

Designed for professional-grade reliability, this kit replaces the factory bump stops and bolts directly to existing mounting points. The installation is a simple process that can be completed in minutes using basic hand tools with no drilling or frame modifications required.

• Manufacturer Part Number: FR1504E
• System Type: Rear Suspension Enhancement System (SES)
• Material: High-quality, durable hollow rubber cushions
• Operation: Maintenance-free progressive rate springs
• Installation: Direct bolt-on; no drilling or air lines required
• Key Benefits: Eliminates squat, reduces trailer sway, and improves handling stability
• Included: All necessary mounting hardware and instructions
• Warranty: Manufacturer Lifetime Warranty

Fits 2009-2014 Ford F-150 models including XL, XLT, Lariat, Platinum, King Ranch, FX4, and SVT Raptor.

The Timbren SES (Suspension Enhancement System) FR1504D is engineered to eliminate vehicle squat and sagging during heavy hauling or towing. By replacing the factory bump stops with Aeon® hollow rubber springs, this system provides a progressive spring rate that automatically adjusts to the load, significantly improving vehicle stability and reducing trailer sway.

This maintenance-free system offers a reliable alternative to air bags, as there are no air lines to route, no fittings to leak, and no pressure to monitor. The simple bolt-on design utilizes factory mounting points, allowing for a straightforward installation with basic hand tools and no drilling required. The rubber cushions absorb road shocks, ensuring a smoother ride quality even under demanding conditions.

• Eliminates rear-end sag and improves handling under load
• Maintenance-free design with no air lines or compressors
• Aeon® hollow rubber springs provide progressive spring rates
• Easy bolt-on installation using factory mounting holes
• Manufacturer Part Number: FR1504D
• Lifetime Warranty
• Includes all necessary mounting hardware and instructions

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

The Timbren FR1502D Suspension Enhancement System (SES) is designed to improve the load-carrying capacity and stability of your truck's rear suspension. By replacing the factory bump stops with high-performance hollow rubber springs, this kit eliminates vehicle squatting, sagging, and trailer sway under heavy loads. The progressive rate of the rubber cushions allows them to adjust automatically to uneven loads or road conditions, providing a smoother ride when loaded without affecting the factory ride quality when empty.

Engineered for durability and ease of use, the SES kit requires no air lines, fittings, or compressors, making it a maintenance-free alternative to air bags. The bolt-on design ensures a straightforward installation using basic hand tools with no drilling required.

• Eliminates vehicle squat, sagging, and rear-end dip
• Cushions road shocks and improves overall handling stability
• Maintenance-free design with no air lines or leaks to manage
• Simple bolt-on installation using existing factory holes
• Manufacturer Part Number: FR1502D
• Includes a lifetime warranty from Timbren

Fits 2002 Ford F53 chassis motorhomes and commercial vehicles.

The Timbren SES (Suspension Enhancement System) FFF53B is engineered to significantly improve the stability and ride quality of your Ford F53 front suspension. By utilizing high-performance Aeon hollow rubber springs, this system provides a progressive spring rate that automatically adjusts to uneven loads and road conditions, preventing front-end sag and reducing body roll.

• Eliminate Squat and Sag: Aeon rubber cushions absorb road shocks and maintain a level vehicle profile under heavy loads.
• Improved Handling: Reduces trailer sway and increases lateral stability for more confident cornering and braking.
• Maintenance-Free Performance: A reliable alternative to air bags with no airlines to route, no fittings to leak, and no pressure to monitor.
• Easy Bolt-On Installation: Replaces factory bump stops using basic hand tools with no drilling required.
• Manufacturer Part Number: FFF53B

This kit includes two Aeon rubber springs, heavy-duty mounting hardware, and is backed by a lifetime warranty for long-term peace of mind on the road.

Fits select 2005-2026 Ford F-350 Super Duty models.

The Timbren FF550SDH Suspension Enhancement System (SES) is designed to reinforce your vehicle's front suspension, providing a more stable and controlled driving experience. Utilizing progressive-rate hollow rubber springs, this kit automatically adjusts to load changes and absorbs harsh road shocks to prevent suspension settling and improve overall handling.

Engineered for long-term reliability, these SES kits require no maintenance—there are no airlines, valves, or fittings to monitor or leak. The bolt-on design allows for a quick installation in a matter of minutes using standard hand tools, with no drilling or vehicle modifications required. This system effectively eliminates vehicle squatting and sagging while reducing trailer sway and body roll.

• MPN: FF550SDH
• Application: Front Suspension Enhancement System
• Material: High-performance hollow rubber cushions
• Hardware: All necessary mounting brackets and bolts included
• Installation: No-drill, bolt-on design using basic hand tools
• Benefits: Eliminates sagging, reduces sway, and improves steering control
• Warranty: Manufacturer Lifetime Warranty

Fits 2005 Ford F-550 Super Duty. Improve your truck's ride quality and front-end stability with the Timbren SES (Suspension Enhancement System) Front Suspension Kit.

This system replaces the factory bump stops with Aeon® hollow rubber springs designed to absorb road shocks and automatically adjust to uneven loads. Unlike air bags, these rubber cushions require no airlines, gauges, or maintenance, making them an ideal solution for fleet and heavy-duty use. The progressive rate of the rubber springs ensures a smooth ride when empty and provides necessary support as the load increases, effectively eliminating vehicle squatting and front-end sagging.

• Replaces factory bump stops to improve load-carrying capacity
• Eliminates vehicle squatting, sagging, and front-end dive
• Maintenance-free design with no airlines or fittings to leak
• Simple bolt-on installation using basic hand tools; no drilling required
• Durable Aeon rubber spring construction for long-term reliability
• Includes all necessary mounting hardware and brackets
• Manufacturer Part Number: FF550SDE