RealTruck UnderCover SwingCase Truck Bed Storage Box - Drivers Side

In this review the UnderCover SwingCase is evaluated as a convenient truck bed storage option for owners of 2020 - 2025 Chevy and GMC Silverado and Sierra 2500/3500HD trucks. The bottom line: this toolbox is best for drivers who want easy access to tools and gear without sacrificing bed space, since it swings out nearly 180 degrees and locks over the wheel well. Installation is straightforward, and the SwingCase works with most tonneau covers while offering secure, weather-protected storage for everyday use.

Key Features

• Vehicle fit: Designed specifically for the drivers side of 2020 - 2025 Chevy/GMC Silverado and Sierra 2500/3500HD trucks, ensuring a tailored fit for these models.
• Swing-out access: The unit swings out nearly 180 toward the tailgate so tools and gear are reachable without climbing into the bed.
• Tonneau cover compatibility: Maintains a 3-in clearance and works with soft, hard, folding, and rolling covers for versatile installation with most bed covers.
• Secure, sealed storage: Key-lockable lid, moisture seal, and an internal organizational tray help keep contents dry and organized while securing up to 75 lbs of cargo.
• Lightweight, durable construction: Built from ABS material similar to UnderCover bed covers for a balance of strength and manageable weight.
• Quick install and support: Simple installation with no special tools and backed by a 1-year guarantee and US-based customer support.

Who It's For

The SwingCase is ideal for pickup owners who frequently need quick outboard access to tools, jumper cables, trailer accessories, or sports gear and who run a tonneau cover. Tradespeople and recreational users will appreciate the swing-out design and the organizational tray for small parts.

This is not the right choice for trucks fitted with a MultiPro tailgate, and some dual-wheel or specialized dually configurations may have fitment issues; customers with those setups should look for a product explicitly listed for their chassis. Buyers seeking very high-capacity heavy-duty toolboxes should consider in-bed or cab-mounted heavy steel boxes instead.

Pros & Cons

Pros

• Easy installation without special tools, making it accessible for DIY fitment.
• Swing-out design offers ultimate accessibility to stored items from the tailgate side.
• Weather protection with a moisture seal and a key-lockable lid improves security for stored gear.
• Works with most tonneau covers thanks to the 3-in clearance design.

Cons

• Some customers report occasional issues with lid closure and fit on specific models, suggesting variable fitment or build tolerances.
• Will not fit trucks equipped with the MultiPro tailgate and may not suit certain dually configurations.

Specifications

Brand	UNDERCOVER
Model	SwingCase SC105D
Fitment	2020 - 2025 Chevy/GMC Silverado/Sierra 2500/3500HD drivers side
Material	ABS construction (same material as UnderCover bed covers)
Load capacity	Up to 75 lbs
Clearance for covers	Maintains 3-in clearance for tonneau compatibility
Warranty	1-year guarantee with US-based support

Our Verdict

The UnderCover SwingCase is a practical, value-minded storage solution for Silverado and Sierra 2500/3500HD owners who need quick, outboard access to gear while keeping most of the bed clear. It combines secure, weather-resistant storage with easy installation and broad tonneau cover compatibility, though buyers with MultiPro tailgates or specialized dually beds should look elsewhere. For most users it delivers convenient functionality at a reasonable tradeoff between capacity and convenience.

Frequently Asked Questions

Will this fit with a tonneau cover?
Yes, the SwingCase maintains a 3-in clearance and is compatible with most soft, hard, folding, and rolling tonneau covers.

Does it work with the MultiPro tailgate?
No, this drivers side SwingCase will not fit trucks equipped with the MultiPro tailgate.

How much weight can it hold?
The SwingCase is rated to hold up to 75 lbs of cargo and includes an internal sliding tray for organization.