Timbren SES Rear Suspension Enhancement System (FR350SDF) for Select 1975-2016 Ford F-350 / F-350 Super Duty

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