Timbren Rear Suspension Enhancement System for 1970-2016 Ford F-350 Super Duty - FR350SDF

Key Features & Specs:

• Part Number: FR350SDF
• Brand: Timbren
• Product Type: Suspension Enhancement System
• Location: Rear Suspension
• Kit Type: Rear Kit
• Rated Capacity: 8,600 lbs
• Kit Height (Without Spacer): 7.25 in
• Kit Height (With 1/2 in Spacer): 7.75 in
• Spring Type: Patented Aeon® hollow rubber springs
• Performance Benefit: Helps reduce sag, sway, and body roll when towing or hauling
• Ride Quality: Maintains comfortable ride characteristics loaded or unloaded
• Installation: DIY bolt-on installation
• Maintenance: No post-installation maintenance required
• Warranty: Lifetime warranty

What’s Included:

• Springs: 2 x Patented Aeon® SES suspensions (hollow rubber springs)
• Spacers: 2 x 1/2 in rubber spacers
• Brackets: 2 x Mounting brackets
• Hardware: All necessary installation hardware

Fitment:

• 1970-1998 Ford F350 Cab & Chassis 2WD
• 1970-1998 Ford F350 Cab & Chassis 4WD
• 2005-2016 Ford F350 Super Duty 2WD
• 2005-2016 Ford F350 Super Duty 4WD
• 1999-2004 Ford F350 Super Duty Cab & Chassis 2WD (With / Without Snow Plow Prep Package)
• 1999-2004 Ford F350 Super Duty Cab & Chassis 4WD (With / Without Snow Plow Prep Package)

The Timbren FR350SDF Suspension Enhancement System is designed to reinforce the rear suspension of Ford F-350 trucks across multiple generations, including Super Duty and Cab & Chassis models. Built with Timbren’s patented Aeon® hollow rubber springs, this system provides progressive load support to help control rear-end squat, sway, and body roll when towing trailers or hauling heavy cargo. The springs engage as additional weight is applied, improving stability while maintaining ride comfort during normal driving conditions. This rear kit includes adjustable spacers to fine-tune installation height for proper spring engagement. The bolt-on design allows for a straightforward DIY installation, and once installed the system operates maintenance-free. Timbren backs the kit with a lifetime warranty for dependable long-term performance.