Upgrade your RAM 3500’s towing and hauling capability with the Timbren SES Suspension Enhancement System Rear Kit. Designed specifically for RAM 3500 pickup and cab & chassis applications, this heavy-duty rear suspension upgrade helps eliminate rear-end sag, excessive sway, body roll, and unstable handling when towing trailers or carrying heavy payloads.
Whether you’re hauling equipment to the job site, towing a fifth wheel across the country, carrying commercial loads, or managing heavy-duty fleet operations, the Timbren SES DR3500CA kit delivers improved ride stability, increased driver confidence, and smoother load handling without compromising unloaded ride comfort. Featuring Timbren’s patented Aeon rubber spring technology, this maintenance-free suspension enhancement system automatically adapts to changing load conditions without air bags, compressors, or manual adjustments. It’s a dependable performance upgrade built for serious towing and commercial-duty truck applications.
Key Features
- Reduces Rear-End Sag, Sway & Roll – Helps improve towing stability, cornering control, and overall ride safety under heavy loads
- Progressive Aeon Rubber Springs – Automatically stiffen as load weight increases to improve suspension support and reduce bottoming out
- Maintenance-Free Design – No compressors, air lines, or post-installation adjustments required after installation
- Fast DIY Installation – Bolt-on installation can typically be completed in under 30 minutes using basic hand tools
Features & Benefits
Heavy towing and hauling can put tremendous strain on your truck’s rear suspension system, resulting in rear-end squat, unstable steering, excessive body roll, and poor ride control. The Timbren SES Suspension Enhancement System is engineered to provide additional suspension support exactly when your RAM 3500 needs it most.
At the heart of the system are Timbren’s patented Aeon hollow rubber springs. Unlike traditional overload springs or air bag systems, Aeon springs utilize a progressive spring rate that automatically responds to changing load conditions. As more weight is added to the rear suspension, the springs progressively stiffen and push back harder to reduce squat, sway, body roll, and suspension compression.
One of the key advantages of the Timbren SES system is its ability to preserve unloaded ride quality. After installation, the Aeon springs maintain approximately a ½-inch to 1½-inch gap from the vehicle frame during normal unloaded driving. This allows the truck to maintain factory-style ride comfort until additional support is needed under load.
The Aeon springs also function as secondary shock absorbers, helping smooth out rough roads, reduce harsh impacts, and improve ride quality whether your truck is fully loaded or running empty. This makes the system ideal for towing RVs, horse trailers, utility trailers, heavy equipment, and commercial loads with improved confidence and stability.
Unlike air suspension systems that require compressors, airlines, gauges, and ongoing maintenance, the Timbren SES system is completely maintenance-free once installed. There are no leaks to monitor, no pressure adjustments required, and no complicated electronics involved. The system automatically engages whenever additional rear suspension support is needed.
Engineered specifically for RAM 3500 pickup and cab & chassis applications, this rear suspension enhancement kit is an ideal solution for commercial work trucks, towing setups, fleet vehicles, and heavy-duty hauling applications.
Vehicle Fitment
Compatible Vehicles:
- 2003–2010 Dodge RAM 3500 2WD
- 2003–2010 Dodge RAM 3500 4WD
- 2003–2010 Dodge RAM 3500 Cab & Chassis 2WD
- 2003–2010 Dodge RAM 3500 Cab & Chassis 4WD
- 2011–2026 RAM 3500 2WD
- 2011–2026 RAM 3500 4WD
- 2011–2026 RAM 3500 Cab & Chassis 2WD
- 2011–2026 RAM 3500 Cab & Chassis 4WD
Suspension Support Location: Rear Suspension
Installation Information
The Timbren SES Rear Kit is designed for fast and straightforward installation using factory mounting locations.
Installation Features:
- Bolt-on installation
- No drilling or fabrication required
- DIY-friendly installation process
- Designed for driveway installation
Estimated Installation Time: Under 30 minutes in most applications
Tools Recommended:
- Basic hand tools
- Ratchet and socket set
- Torque wrench recommended
- Vehicle jack or lift recommended
Additional Installation Notes:
- Aeon springs are designed to maintain approximately a ½-inch to 1½-inch gap from the vehicle frame during unloaded driving
- No post-installation adjustments or maintenance required
- Designed specifically for rear suspension applications only
Rated Capacity: 8,600 lbs
Kit Height:
- 6.43" without spacer
- 7.43" with included 1" spacer installed
Important: Installing a suspension enhancement system does not increase the vehicle’s factory GVWR (Gross Vehicle Weight Rating). Always follow the manufacturer’s specified towing and weight capacities.
What’s Included
- 2 × 1" rubber spacers
- 2 × Mounting brackets
- 2 × Patented Aeon SES hollow rubber springs
- Installation hardware
Care & Maintenance
The Timbren SES system is engineered for long-term durability with virtually no maintenance required.
Recommended Maintenance:
- Periodically inspect mounting hardware for tightness
- Check rubber springs during routine vehicle inspections for wear or damage
- Clean components using mild soap and water if needed
- Avoid petroleum-based cleaners or harsh chemicals on rubber components
Because the system contains no compressors, airlines, or moving mechanical parts, long-term upkeep is minimal.
Warranty Details
Timbren SES Suspension Enhancement Systems are backed by a Lifetime Warranty covering defects in materials and workmanship under normal use and service for the life of the vehicle on which the kit was originally installed.
Warranty Coverage Includes:
- Defects in materials
- Defects in workmanship
- Replacement of failed components under normal operating conditions
Warranty Exclusions Include:
- Improper installation
- Vehicle overloading beyond manufacturer specifications
- Abuse, misuse, alterations, or neglect
- Damage caused by accidents or external sources
Proof of purchase may be required for warranty claims.
Terms to Know
- Aeon Rubber Springs: Patented hollow rubber suspension springs designed to provide progressive load support and improved ride stability.
- Progressive Spring Rate: A suspension characteristic where spring resistance increases as additional weight or pressure is applied.
- SES (Suspension Enhancement System): An aftermarket suspension upgrade designed to improve towing stability, load support, and ride quality.
- GVWR (Gross Vehicle Weight Rating): The maximum allowable total vehicle weight specified by the vehicle manufacturer, including passengers, cargo, and trailer tongue weight.
- Bolt-On Installation: A product designed to install using factory mounting locations without requiring welding or fabrication.
Whether you’re towing heavy trailers, hauling commercial equipment, or operating a hard-working fleet truck, the Timbren SES Suspension Enhancement System Rear Kit delivers the stability, comfort, and maintenance-free performance your RAM 3500 needs. Built for demanding real-world hauling applications, it’s one of the most effective suspension upgrades available for improving load control, ride quality, and towing confidence.