Rear Suspension Kit Ford F-350 2017–2025 7000 LBS | RETRUE

7,000 LBS Support: Designed for compatible 2017–2025 Ford F-350 Super Duty trucks, this rear suspension kit provides up to 7,000 lbs of supplemental support to help reduce sag, sway, and excessive suspension movement under load.

Progressive Rubber Springs: Durable rear suspension helper springs progressively engage as the suspension compresses, supporting a more level stance and controlled handling during towing and hauling.

Maintenance-Friendly Design: Unlike air systems, this F-350 suspension kit requires no compressors, air lines, or pressure adjustments, providing straightforward mechanical support with minimal ongoing maintenance.

Towing & Hauling Upgrade: Suitable for RVs, campers, equipment trailers, horse trailers, work equipment, and bed cargo. The kit supplements the factory suspension and does not increase GVWR, GAWR, payload, or towing capacity.

Vehicle Fitment: 2017–2025 Ford F-350 Super Duty

Installation Position: Rear Suspension

Product Type: Rubber Rear Suspension Helper Spring Kit

Load Support: Up to 7,000 lbs of Supplemental Suspension Support

Installation Type: Bolt-On Design; No Drilling Required for Compatible Applications

Adjustment Type: Non-Adjustable Rubber Spring System

Air Compressor Required: No

Air Lines Required: No

Air Pressure Adjustment: Not Applicable

Suspension Function: Supplemental Rear Load Support

Lifted Vehicles: Verify Compatibility and Available Mounting Clearance

Modified Suspension: Additional Fitment Verification Required

Drive Configuration: Confirm Compatibility Before Purchase

Single-Rear-Wheel / Dual-Rear-Wheel Configuration: Confirm Compatibility Before Purchase

Fitment Note: Verify the truck's exact rear suspension configuration, mounting dimensions, and clearance before ordering. Aftermarket lift kits and suspension modifications may affect fitment.

Capacity Note: Does Not Increase Factory GVWR, GAWR, Payload, or Towing Capacity.

Shipping:
We ship our products primarily through USPS/UPS. All items will be shipped within 72 business hours upon receipt of payment (except Saturday and Sunday). Orders placed on weekend will be shipped within 4 days.

Returns:
Items purchased from RETRUE may be returned in original unused condition within 30 days after you receive your order for a refund, to the original form of payment. All returns must be pre-approved by RETRUE. Otherwise, unauthorized returns will not be accepted.

Warranty: Air Springs: Limited Lifetime
Hardware & Brackets of Air Springs: 2 Years
Bumpers, Hardware, Fittings & Air Line of Air Accessories: 2 Years
Hardware & Brackets of Air Accessories: 1–2 Years (depending on model; view product warranty documents for details)

Product Type: Rear Rubber Helper Spring Kit

Product Model: RFR350

Vehicle Fitment: 2017–2025 Ford F-350 Super Duty

Installation Position: Rear Suspension

Package Quantity: One Pair of Rubber Helper Springs

Load Support: Up to 7,000 lbs of Supplemental Suspension Support

Spring Material: Rubber

Bracket Material: Steel

Bracket Finish: Protective Surface Treatment

Spring Design: Progressive Compression Support

Adjustment Type: Non-Adjustable

Installation Type: Bolt-On Design

Drilling Required: No, for Compatible Applications

Air Compressor Required: No

Air Lines Required: No

Routine Air Pressure Adjustment: Not Required

Rubber Component Dimension: Approximately 3.35 Inches (85 mm); Measurement Direction Requires Confirmation

Rubber Component Height: Approximately 4.53 Inches (115 mm)

Mounting Bracket Length: Approximately 7.87 Inches (200 mm)

Installation Time: Approximately 30 Minutes; Actual Time Depends on Vehicle Configuration and Installer Experience

Package Contents: One Pair of Rubber Helper Springs, Mounting Brackets, and Installation Hardware

Capacity Note: Does Not Increase Factory GVWR, GAWR, Payload, or Towing Capacity.

Q1: Does this rear suspension kit fit a 2017–2025 Ford F-350 Super Duty?
A: This F-350 rear suspension kit is designed for compatible 2017–2025 Ford F-350 Super Duty rear suspension applications and serves as a replacement solution for FR350SDJ-style systems. Verify the exact suspension configuration before ordering.

Q2: How much suspension support does this F-350 suspension kit provide?
A: The F-350 suspension kit provides up to 7,000 lbs of supplemental suspension support. This rating refers to suspension support only and does not increase the truck manufacturer's GVWR, GAWR, payload, or towing capacity.

Q3: How do the rear suspension helper springs work?
A: The rear suspension helper springs progressively engage as the rear suspension compresses under load. Increased compression creates additional resistance to help control rear sag, sway, tilt, and excessive suspension movement during towing or hauling.

Q4: Do these helper springs require air pressure or a compressor?
A: No. Unlike an air suspension system, these helper springs for towing use durable rubber components and require no compressor, air lines, or air-pressure adjustments, making them a low-maintenance suspension support solution.

Q5: Are these helper springs suitable for towing RVs and heavy trailers?
A: The Ford F-350 suspension upgrade can provide supplemental rear suspension support when towing compatible RVs, campers, horse trailers, and equipment trailers. Always remain within Ford's specified GVWR, GAWR, payload, and towing limits.