MaxTrac 900270 Silverado 1500 7" Rear Lift Box Kit

Complete a 9"–10" Front Lift Setup with 7" of Rear Lift

Finish the rear suspension of your compatible 2025–2026 Chevrolet Silverado 1500 or GMC Sierra 1500 2WD/4WD with the MaxTrac 900270 Rear Lift Box Kit. Configured as Box 5 of 5, this package supplies the rear components for the 9"–10" front lift configuration, including 7" rear lift blocks, U-bolts, and brake line brackets.
The 900270 is designed to work as part of the corresponding MaxTrac GM 1500 7"–10" high-lift suspension system. It provides the 7" rear lift required for the taller 9"–10" front setup and is a component box rather than a complete standalone lift kit.

Key Features

7" Rear Lift

Includes 7-inch rear lift blocks to establish the rear ride height required for the corresponding 9"–10" front lift configuration.

Box 5 of 5

Designed as Box 5 of 5 within the applicable MaxTrac multi-box GM 1500 high-lift suspension system.

Matched to 9"–10" Front Lift

The 7" rear lift configuration is intended to complement the taller 9"–10" front setting of the compatible MaxTrac suspension system.

Rear U-Bolts Included

Supplied U-bolts secure the rear axle, lift blocks, and leaf-spring assembly in the lifted configuration.

Brake Line Brackets Included

Includes brake line relocation brackets to accommodate the additional rear suspension height.

2WD & 4WD Applications

Fits compatible 2025–2026 Silverado and Sierra 1500 2WD/4WD trucks using the appropriate MaxTrac high-lift system.

What's Included

7" rear lift blocks
Rear U-bolts
Brake line brackets
Installation hardware as supplied by MaxTrac

Vehicle Fitment

Fits

2025–2026 Chevrolet Silverado 1500 2WD
2025–2026 Chevrolet Silverado 1500 4WD
2025–2026 GMC Sierra 1500 2WD
2025–2026 GMC Sierra 1500 4WD
Compatible MaxTrac 9"–10" front lift configurations

Does Not Fit

Models equipped with a monoleaf rear spring
Models equipped with Adaptive Ride Control

Important Notes

Box 5 of 5 for the corresponding MaxTrac high-lift suspension system.
7" rear lift box is intended for the 9"–10" front lift configuration.
Designed to work in conjunction with the applicable 2019+ GM 1500 MaxTrac 7"–10" lift system.
Does not fit models equipped with a monoleaf rear spring.
Does not fit models equipped with Adaptive Ride Control.
This is a component box and does not include all parts required for a complete 9"–10" suspension lift. The remaining applicable MaxTrac lift-system boxes are required.
Rear shocks are not listed as included with part number 900270.
MaxTrac does not recommend wheels wider than 9" or wheels with less than 4.5" backspacing. Using wheels outside these recommendations will void applicable manufacturer warranties.

Product Specifications

Brand: MaxTrac Suspension
Part Number: 900270
UPC: 706199417307
Tariff: 8708.80.1600
Kit Type: Lift / Level
Product Type: Rear Lift Box Kit
Box Number: 5 of 5
Position: Rear
Rear Lift: 7"
Front Lift Configuration: 9"–10"
Lift System Range: 7"–10"
Drivetrain: 2WD / 4WD
Rear Lift Blocks: 7"
Rear U-Bolts: Included
Brake Line Brackets: Included
Rear Shocks: Not Listed / Not Included
Adaptive Ride Control: Not Compatible
Monoleaf Rear Spring: Not Compatible
Material: Steel
Color: Grey
Finish: Grey Powder Coat
Sold As: Each
Weight: 30 lbs
Dimensions: 15" × 8" × 6"
Multiple Box Item: No
Origin Criterion: B
Unit of Measure: IN
Country of Origin: China

Why Choose MaxTrac 900270?

The MaxTrac 900270 provides the rear components needed when completing the taller 9"–10" front configuration of the compatible MaxTrac GM 1500 high-lift system. The 7" lift blocks and U-bolts establish the required rear height, while the included brake line brackets help accommodate the increased suspension travel and positioning.
As Box 5 of 5, it is also a useful application-specific replacement when servicing or rebuilding the rear portion of an existing compatible MaxTrac multi-box lift system.

Perfect For

9"–10" Silverado 1500 lift builds
Sierra 1500 high-lift systems
7" rear suspension lift setups
MaxTrac multi-box kit replacements
2WD and 4WD GM 1500 projects
Rear block and U-bolt upgrades