MaxTrac 913318 Semi-Round U-Bolt Kit for 2017-2026 Ford F-250/F-350 4WD 6" Lift Blocks

Heavy-Duty U-Bolts for Lifted Ford Super Duty Trucks

The MaxTrac 913318 Semi-Round U-Bolt Kit is designed for 2017-2026 Ford F-250 and F-350 4WD trucks equipped with 6-inch rear lift blocks. Constructed from high-strength 5/8-inch steel and finished with a corrosion-resistant gold zinc plating, these heavy-duty U-bolts deliver the clamping force and durability needed for towing, hauling, off-road use, and daily driving.

Key Features

Direct Super Duty Fit

Designed specifically for 2017-2026 Ford F-250 and F-350 4WD applications using 6-inch rear lift blocks.

Heavy-Duty Steel Construction

Built from premium steel for exceptional strength and secure rear axle retention.

Gold Zinc Plated Finish

Provides excellent protection against rust, corrosion, road salt, and harsh weather.

Precision Semi-Round Design

Engineered for proper axle clamping and dependable suspension performance on lifted trucks.

Ideal Replacement Hardware

Perfect for replacing factory U-bolts or completing a MaxTrac lift kit installation.

What's Included

(4) Semi-Round U-Bolts
Installation Hardware

Vehicle Fitment

Fits

2017-2026 Ford F-250 Super Duty 4WD
2017-2026 Ford F-350 Super Duty 4WD
Applications using 6-inch rear lift blocks

Does Not Fit

2WD Models

Important Notes

18.50" x 3.215" x 5/8" U-bolt dimensions.
Designed for 6-inch lift blocks.
Gold zinc plated finish.
2020+ F-350 dually models require removal of the upper overload spring and spacer block.
Verify U-bolt dimensions before ordering.
Professional installation recommended.
MaxTrac recommends wheels no wider than 9" with at least 4.5" of backspacing. Using wheels outside these recommendations may void the manufacturer warranty.

Product Specifications

Part Number: 913318
UPC: 706199413095
Kit Type: Lift/Level
Product Type: Semi-Round U-Bolt Kit
Position: Rear Suspension
Lift Height Option: 8"
Compatible Lift Blocks: 6"
U-Bolt Size: 18.50" x 3.215" x 5/8"
Material: Steel
Finish: Gold Zinc Plated
Color: Gold
Engine Compatibility: Gas, Diesel
Sold As: Set
Weight: 16 lbs
Dimensions: 36" x 6" x 4"
Country of Origin: USA

Why Choose MaxTrac?

Designed specifically for lifted Ford Super Duty trucks, the MaxTrac 913318 U-Bolt Kit provides the strength, fitment, and corrosion resistance needed to keep your rear suspension secure. Whether your truck is built for work, towing, or off-road adventures, these USA-made U-bolts are built for long-term reliability.

Perfect For

6" Lift Block Installations
Replacement U-Bolts
Lift Kit Maintenance
Tow Rigs
Work Trucks
Off-Road Builds
Heavy-Duty Applications