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🧾 Overview
The Timbren SES Suspension Enhancement System – Rear Kit for the 2011–2016 Ford F-250 Super Duty is engineered to eliminate rear sag, body roll, and unstable handling caused by heavy towing or hauling. Designed as a maintenance-free alternative to airbags, the Timbren SES system delivers a safer, more controlled ride without compromising unloaded comfort.
At the core of the system are Timbren Aeon® hollow rubber springs, which provide a progressive spring rate. As load increases, the springs compress and push back harder—automatically leveling your truck, reducing squat, and improving stability through corners and crosswinds. When unloaded, a built-in air gap preserves factory ride quality.
✔ Eliminates rear sag and sway
✔ Improves towing and hauling stability
✔ Zero maintenance design
✔ Fast, bolt-on installation
🛠 Installation
- Bolt-on installation using factory mounting points
- No drilling, cutting, or welding required
- Typical install time: ~30 minutes
- No air lines, compressors, or adjustments needed
📌 Specs
- Progressive Aeon® rubber springs automatically adjust to load weight
- Eliminates rear sag, squat, sway, and excessive body roll
- Maintains a smooth, factory-like ride when unloaded
- No maintenance required — unlike air bag systems
- Improves braking control and steering stability under load
- Durable rubber construction designed for long service life
- 📌 Technical Highlights
- System Type: Suspension Enhancement System (SES)
- Spring Type: Aeon® hollow rubber springs
- Location: Rear suspension
- Ride Gap (Unloaded): ½" – 1½"
- Maintenance: None required
- Installation Type: Bolt-on
⚠️ Fitment Notes
- Ford F-250 Super Duty (2011–2016)
- Important Notes:
- Designed for rear suspension only
- Not an air suspension system
- Ride gap must be present after installation for proper unloaded comfort