The right hitching system can make all the difference in safety, convenience, and vehicle performance. For RV owners who prefer the simplicity of a gooseneck setup but own a fifth wheel trailer, the PopUp 5th Wheel King Pin Box from Hitches and Couplers is a smart and innovative solution. This specialized replacement pin box transforms your towing configuration without sacrificing strength or control—and it’s built with serious haulers in mind.

Why a 5th Wheel King Pin Box Conversion?

Traditionally, fifth wheel trailers require a fifth wheel hitch—an often bulky and permanently installed piece of equipment that takes up valuable truck bed space. For those who use their truck for more than just towing a trailer—like hauling hay, tools, or equipment—a full-sized fifth wheel hitch can be more of a hindrance than a help.

That’s where a fifth wheel to gooseneck conversion comes in. By replacing the standard king pin box on the trailer with a gooseneck-compatible coupler, you eliminate the need for a fifth wheel hitch entirely. The trailer connects directly to a standard gooseneck ball mounted in the truck bed—offering a streamlined solution for those who prefer versatility and bed space.

PopUp’s Innovation in Trailer Towing

Among the many available options, the PopUp 5th Wheel to Gooseneck King Pin Box stands out for its build quality, ease of use, and long-term reliability. Sold by Hitches and Couplers, this product is purpose-built to meet the needs of those who want to convert their fifth wheel trailer to a gooseneck setup without compromising safety or structural integrity.

Here are some key reasons why the PopUp model is a preferred choice:

Key Features of the PopUp 5th Wheel Gooseneck Coupler

🔩 Direct Replacement for King Pin Box

The PopUp unit is designed to bolt directly in place of your existing king pin box. This means there’s no need for complex modifications or additional welding. It’s a clean, mechanical swap that keeps your trailer structurally sound while providing gooseneck functionality.

🛞 Robust Build for Heavy Loads

PopUp products are known for their rugged durability, and this coupler is no exception. Constructed from heavy-duty steel and engineered to meet high GVWR (Gross Vehicle Weight Rating) requirements, it’s rated to tow trailers up to 24,000 lbs GTWR and 6,000 lbs pin weight, depending on the model chosen. That’s more than enough for most RVs, toy haulers, and flatbed-style fifth wheels.

⚙️ Cushioned Ride Options Available

Some PopUp models include built-in shock-absorbing components to reduce road vibration and chucking (that annoying back-and-forth motion between truck and trailer). This is particularly beneficial for long hauls, as it helps protect your cargo and provides a smoother towing experience.

🔧 Adjustable Coupler Height

A key advantage of the PopUp design is its adjustable gooseneck coupler height. With multiple height settings, you can fine-tune the trailer’s position to ensure a level ride, better clearance, and safer handling on the road.

🔒 Secure, Self-Latching Coupler

PopUp’s coupler system features a self-latching gooseneck ball connection, allowing for quick hookup and added peace of mind. The secure latch mechanism ensures a solid connection every time, with a built-in release accessible from outside the truck bed—no need to crawl underneath.

Benefits of Switching to a Gooseneck Setup

Choosing a gooseneck hitch setup instead of a fifth wheel hitch offers several advantages:

• Clear Truck Bed Space: When not in use, the gooseneck ball can be flipped or removed, leaving a clean bed for hauling gear.
• Easier Hookups: Many users find that gooseneck connections are simpler and faster to align.
• Lower Cost and Weight: Gooseneck hitches are typically lighter and less expensive than fifth wheel hitches.
• Versatility: You can tow various types of trailers with the same hitch.

A Trusted Source: Hitches and Couplers

Hitches and Couplers is a leading supplier of towing equipment and accessories, and they’re proud to offer the PopUp 5th Wheel King Pin Box to meet the growing demand for gooseneck conversion systems. Their knowledgeable staff can help ensure you select the correct model for your trailer make and bolt pattern.

Whether you’re a seasoned RV traveler, a horse hauler, or a weekend adventurer, this PopUp solution provides a reliable, road-tested upgrade that maximizes towing efficiency and frees up your truck bed for whatever else the job—or the journey—requires.

Final Thoughts

The PopUp 5th Wheel King Pin Box for Gooseneck Hitch is more than just a clever piece of engineering—it’s a practical upgrade that solves real-world towing challenges. Backed by a trusted provider like Hitches and Couplers, this product delivers confidence, convenience, and long-term value for any fifth wheel owner looking to simplify their towing setup.