Black EZ Trunk on black Ram pickup, used as a bed extender with gear inside—showcasing added storage and cargo organization.
Video showing people using EZ4X4 bed box and trunk extension for Dodge Ram trucks, highlighting easy setup and secure cargo storage.
EZ Trunk Bed Box for Jeeps Demonstration Video
Close-up of hand gripping EZTrunk handle, showing use as bed extender or secure cargo storage solution.
Woman using handle to convert black EZ Trunk from a truck bed extender into secure cargo storage space inside the truck bed.
Two people organizing gear with a shelf inside the black EZ Trunk, showcasing versatile cargo storage and space optimization.
Man setting up EZ Trunk as a truck bed extender, showcasing quick conversion and versatile cargo storage for pickup trucks.
Man closing tailgate of black Ram pickup with black EZ Trunk secured inside, showcasing secure fit and organized cargo space.
Black EZ Trunk on black Ram pickup, used as a bed extender with gear inside—showcasing added storage and cargo organization.
Video showing people using EZ4X4 bed box and trunk extension for Dodge Ram trucks, highlighting easy setup and secure cargo storage.
EZ Trunk Bed Box for Jeeps Demonstration Video
Close-up of hand gripping EZTrunk handle, showing use as bed extender or secure cargo storage solution.
Woman using handle to convert black EZ Trunk from a truck bed extender into secure cargo storage space inside the truck bed.
Two people organizing gear with a shelf inside the black EZ Trunk, showcasing versatile cargo storage and space optimization.
Man setting up EZ Trunk as a truck bed extender, showcasing quick conversion and versatile cargo storage for pickup trucks.
Man closing tailgate of black Ram pickup with black EZ Trunk secured inside, showcasing secure fit and organized cargo space.

GMC Sierra & Chevy Silverado Tailgate Extender & Secure Bed Box | EZ4X4

7403 1698

$1,299.99 $899.99
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  • Free US Shipping (Lower 48)
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GMC Sierra & Chevrolet Silverado Tailgate Extender & Secure Bed Box Storage Details & Features

Extend your cargo space, protect your load, and add lockable storage — engineered for GMC Sierra and Chevrolet Silverado 1500, 2500, and 3500 trucks.

The EZ4X4 Tailgate Extender & Bed Box Storage System increases your truck’s usable bed length while preventing lumber, tools, and gear from sliding out of an open tailgate. Its enclosed design outperforms traditional tubular bed extenders by fully containing your cargo and keeping everything securely in place.

Open-style extenders leave gaps that allow long boards and loose items to shift, slip, or fall out. This enclosed Bed Box Extender solves that problem with a rugged, enclosed structure engineered for heavy-duty hauling, worksite use, and GM bed dimensions.

Key Benefits

This dual-purpose system expands usable bed space, keeps cargo fully contained, provides lockable storage, and rotates to match your hauling needs — all engineered for Sierra and Silverado trucks.

  • Extended, contained cargo space: Increases your truck’s usable bed area while preventing cargo from sliding or falling out of an open tailgate.
  • Dual-purpose design: Functions as both a tailgate bed extender and a secure enclosed bed box when the tailgate is closed.
  • Rotating Bed Extender: Rotates inward or outward to match your hauling needs and provide instant access to more space or enclosed storage.
  • Lockable storage: Creates a secure compartment for tools, equipment, bags, golf clubs, and valuables when the tailgate is shut.

Operation & Ease of Use

These operational features ensure smooth handling, fast adjustments, and dependable security every time you use your Bed Box Extender.

  • Hide-away handle: Rotates smoothly using a built-in, low-effort handle that makes changing positions quick and intuitive.
  • Quick removal: Detaches using two knob-style bolts, allowing fast on/off convenience whenever you need full bed access.
  • Secure locking: Equipped with a round key lock for dependable protection and peace of mind.

Construction & Compatibility

This combination of reinforced materials, protective finishes, tonneau-friendly engineering, and installation-ready hardware creates a rugged, high-performance system designed to last.

  • Steel & aluminum construction: Made from a reinforced steel-and-aluminum blend for maximum strength and long-term durability.
  • Powder-coated finish: Textured coating provides a clean OEM-style appearance and added corrosion resistance.
  • Tonneau cover friendly: Works with most tonneau covers, including above-bedrail designs.
  • Complete install kit: Includes the Bed Box, brackets, and all required hardware for EZ installation.
  • Patent pending: Innovative dual-purpose tailgate extender and enclosed bed box system protected under pending patent status.

Product Dimensions

The following dimensions show the full size of the Bed Box, making it easy to confirm fitment for your truck and compare with other storage solutions.

  • Overall Width: 55"
  • Overall Height: 16"
  • Overall Depth: 29"

Please Note: The bottom shelf and fabric cover are included. Optional slide-out shelves can be added to your Bed Box order, and add-ons can also be ordered later. All Bed Box accessories are packaged independently and shipped in their own boxes.

Ready to Upgrade Your Sierra or Silverado?

Extend your bed space, secure your cargo, and add lockable storage with the EZ4X4 Bed Box & Tailgate Extender for GMC Sierra and Chevrolet Silverado trucks. Click Add to Cart to elevate your truck’s capability.

Free Shipping within the United States (Lower 48)

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