MaxTrac 813360 F-250/F-350 4WD 6" Rear Lift Blocks

Add Serious Rear Height to Your Super Duty

Set up the rear suspension of your 2017–2026 Ford F-250 or F-350 4WD with the MaxTrac 813360 6" Rear Lift Blocks. Fabricated from heavy-duty steel, these application-specific blocks provide a 6" block height and feature a built-in 6-degree angle to support the geometry of a substantially lifted Super Duty.
Each block also incorporates a bump stop striker plate, giving the factory-style bump stop a proper contact surface within the lifted suspension configuration. For trucks originally equipped with factory 2" or 3" rear blocks, actual net lift after replacing those blocks will be approximately 4" or 3" over the original stock height, respectively.

Key Features

6" Rear Lift Block Height

Uses a full 6" block height for high-lift F-250 and F-350 rear suspension applications.

Built-In 6-Degree Angle

Each block incorporates 6 degrees of angle to better accommodate the driveline geometry associated with a substantial rear suspension lift.

Integrated Bump Stop Striker Plate

A built-in bump stop striker plate provides an appropriate contact surface for the rear suspension bump stop.

Heavy-Duty Steel Construction

Fabricated from steel for the strength required between the Super Duty rear axle and leaf spring assembly.

USA-Made

Manufactured in the USA for 2017–2026 Ford Super Duty 4WD applications.

Grey Powder-Coated Finish

A durable grey powder coat protects the steel construction and provides a clean MaxTrac finish.

What's Included

(2) MaxTrac 6" rear lift blocks
Integrated bump stop striker plates
Longer U-bolts are not included

Vehicle Fitment

Fits

2017–2026 Ford F-250 Super Duty 4WD
2017–2026 Ford F-350 Super Duty 4WD

Important Notes

Blocks measure 6" in height.
Built with a 6-degree angle.
Features an integrated bump stop striker plate.
Longer U-bolts are required and available separately.
If replacing factory 2" rear blocks, the 6" blocks provide approximately 4" of net lift over the original stock configuration.
If replacing factory 3" rear blocks, the 6" blocks provide approximately 3" of net lift over the original stock configuration.
Actual ride-height increase depends on the factory block being removed and the truck's original suspension configuration.
MaxTrac does not recommend wheels wider than 9" or wheels with less than 4.5" backspacing. Using wheels outside these specifications may void applicable manufacturer warranties.

Product Specifications

Brand: MaxTrac Suspension
Part Number: 813360
UPC: 706199413064
Tariff: 8708.80.6590
Kit Type: Lift / Level
Product Type: Rear Lift Blocks
Position: Rear
Block Height: 6"
Rear Lift: Up to 6" Depending on Factory Configuration
Net Lift Replacing 2" Factory Block: Approximately 4"
Net Lift Replacing 3" Factory Block: Approximately 3"
Block Angle: 6 Degrees
Bump Stop Striker Plate: Included / Integrated
U-Bolts: Required; Sold Separately
Drivetrain: 4WD
Material: Steel
Color: Grey
Finish: Grey Powder Coat
Sold As: Pair
Quantity: 2
Weight: 16 lbs
Dimensions: 15" × 7" × 6"
Multiple Box Item: No
Origin Criterion: B
Unit of Measure: IN
Country of Origin: USA

Why Choose MaxTrac 813360?

The MaxTrac 813360 is purpose-built for lifted Ford Super Duty applications rather than functioning as a generic rear spacer. Its combination of a 6" fabricated steel body, 6-degree angle, and integrated bump stop striker plate addresses key requirements of a high-lift leaf-spring suspension.
The blocks are also USA-made and can be paired with correctly sized extended U-bolts to complete the rear block installation.

Perfect For

F-250 Super Duty lift builds
F-350 Super Duty suspension upgrades
High-lift 4WD applications
Factory block replacement
Leaf spring suspension setups
6-degree angled block configurations