MaxTrac 904140 4" Rear Lift Box Kit with 2.5" Front Strut Spacers & Rear Shocks for 2021-2026 Ford F-150 2WD

Complete your F-150 suspension build with the MaxTrac 904140 Rear Lift Box Kit. Designed specifically for 2021-2026 Ford F-150 2WD trucks, this complete suspension package includes 2.5-inch front strut spacers, 4-inch rear lift blocks, heavy-duty U-bolts, and a pair of MaxTrac rear shocks. When paired with MaxTrac Part #704140, this kit completes a full 6.5-inch suspension lift while maintaining excellent ride quality and proper suspension geometry.

Built from heavy-duty steel and finished in MaxTrac's durable grey powder coat, the 904140 delivers the strength, corrosion resistance, and performance needed for daily driving, towing, and off-road adventures.

Key Features

Complete 6.5" Lift Companion Kit

Designed to pair with MaxTrac Part #704140 to complete a full 6.5-inch suspension lift.

2.5" Front Strut Spacers Included

Raises the front suspension for a leveled, aggressive stance and proper ride height.

4" Rear Lift

Includes heavy-duty 4-inch rear lift blocks and extended U-bolts for dependable rear suspension lift.

MaxTrac Rear Shocks Included

Includes (2) MaxTrac 3200LL-9 rear shocks engineered specifically for lifted F-150 applications.

Heavy-Duty Steel Construction

Manufactured from premium steel for outstanding strength, durability, and long service life.

Grey Powder Coat Finish

Protects against corrosion, rust, and harsh weather conditions.

What's Included

• (2) 2.5" Front Strut Spacers
• (2) 4" Rear Lift Blocks
• (2) Heavy-Duty U-Bolts
• (2) MaxTrac Rear Shocks (3200LL-9)
• Installation Hardware

Vehicle Fitment

Fits

• 2021-2026 Ford F-150 2WD

Does Not Fit

• F-150 Hybrid models
• F-150 Tremor models
• Models equipped with CCD Suspension
• Models equipped with BlueCruise

Important Notes

• Designed for use with MaxTrac Part #704140 to complete a 6.5-inch lift kit.
• Replacement rear shocks are sold individually. Order quantity two if purchasing separately.
• Professional alignment is recommended after completing the suspension installation.

Wheel Recommendations

• Maximum recommended wheel width: 9 inches.
• Minimum recommended backspacing: 4.5 inches.
• Wheels outside these specifications may void the manufacturer warranty.

Why Choose the MaxTrac 904140?

The MaxTrac 904140 provides a complete rear suspension solution for building a properly balanced lifted F-150. Combining front strut spacers, heavy-duty rear lift blocks, premium hardware, and matched MaxTrac rear shocks, this kit delivers outstanding ride quality, dependable handling, and the aggressive stance truck owners expect.

Perfect For

• Completing a MaxTrac 6.5-inch lift
• Daily drivers
• Work trucks
• Larger tire upgrades
• Towing applications
• Off-road builds

Product Specifications

Part Number: 904140
UPC: 706199414566
Kit Type: Lift
Rear Lift: 4"
Material: Steel
Color: Grey
Finish: Grey Powder Coat
Engine Compatibility: Gas
Shock Details: Rear: 3200LL-9 (Qty. 2)
Sold As: Combo Kit
Weight: 46 lbs
Dimensions: 24" × 14" × 8"
Country of Origin: China