What is the length of this hardware kit?

This BackRack hardware kit is the standard 21 inches.

Does this kit allow for a tonneau cover to be installed?

This hardware kit is designed to work with a tonneau cover. It allows the toolbox to sit flush against the BackRack while maintaining tonneau cover functionality.

What tools are needed for installation?

Refer to the manufacturer's installation instructions for a list of required tools and detailed steps. The installation process typically involves basic hand tools.

Specifications

Brand: BackRack
Part #: 40124
UPC: 834136006144

BackRack 2019+ Silverado Sierra HD Only Low Profile Tonneau Hardware Kit

Name: BackRack 2019+ Silverado Sierra HD Only Low Profile Tonneau Hardware Kit
Brand: BackRack
SKU: backrack-backrack-2019-silverado-sierra-hd-only-low-profile-tonneau-hardware-kit-t14-438490
Price: 199.99 USD
Availability: BackOrder

$199.99

On Backorder — Expected to ship by Jul 17, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Allows a toolbox to be installed flush against the BackRack without drilling. Replaces standard railmount hardware.

Key Features

Replaces standard railmount hardware
Allows toolbox to be installed flush against BackRack — eliminates the gap between the toolbox and the BackRack
Allows toolbox to be installed without drilling — no need to drill into the truck bed

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

About this part

Product Details

Replaces Standard Railmount Hardware. Allows Toolbox to be installed flush against BackRack(TM). Eliminates gap between Toolbox and Backrack. Allows Toolbox to be installed without drilling into truck bed. Standard 21 inches.