5 Best Detachable Gooseneck Lowboy Trailer for Pickup Truck

Towing a lowboy trailer with your pickup truck often requires a gooseneck hitch, but a permanent ball in the bed can be a hassle. A detachable gooseneck adapter that works with your existing 5th wheel rails offers the perfect solution, giving you a clean truck bed when not towing.

This guide reviews five top-rated adapters, comparing their build, capacity, and ease of use. Whether you need maximum strength for heavy equipment or a simple, reversible setup, you will find the right choice here.

Curt Manufacturing 16055 – Reliable Rail Mounted Hitch

The Curt 16055 is a straightforward, rail-mounted gooseneck hitch designed for trucks already equipped with 5th wheel rails. Its four-pin installation allows you to drop it in and remove it quickly, giving you full access to your truck bed when you are not towing a gooseneck trailer. The welded 2-5/16-inch trailer ball is built to handle demanding loads, making it a solid choice for your lowboy trailer.

This model mounts to all industry-standard 5th wheel base rails, ensuring broad compatibility with most pickup trucks. The simple design focuses on reliability and ease of use, letting you switch between towing and a clear bed in minutes. If you value a no-fuss, durable adapter from a trusted brand, this hitch delivers consistent performance.

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• Allows pickup trucks equipped with 5th wheel rails to tow gooseneck trailers
• Mounts to all industry-standard 5th wheel base rails
• Four-pin installation and removal for easy truck bed access
• Features a welded 2-5/16" trailer ball
• Can be positioned over the axle or flipped for 3" rearward offset

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JOINCARZ 25000 lbs Adapter – High Capacity for Heavy Loads

The JOINCARZ gooseneck adapter is rated for an impressive 25,000 lbs gross trailer weight and 6,250 lbs tongue weight, giving you substantial towing capacity for your lowboy trailer. It fits all industry-standard 5th wheel rails, making it a versatile upgrade for your pickup truck. The four-pin installation is straightforward, and you can position it over the axle or flip it for three inches of rearward adjustment.

Protected by a durable carbide black powder coat finish, this hitch resists corrosion and wear. The high-strength construction ensures it can handle the demands of heavy towing without compromising safety. If you need maximum capacity from a rail-mounted adapter, this model offers excellent value and robust performance for your heavy equipment.

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• ENHANCED TOWING CAPACITY：Rated for 25,000 lbs gross trailer weight and 6,250 lbs tongue weight, offering superior towing capacity compared to similar products. This makes it suitable for everyday towing needs while also being ideal for heavy-duty towing applications.
• Designed to fit all industry-standard 5th wheel rails, this 5th wheel gooseneck adapter is compatible with trucks primarily dedicated to the task of towing gooseneck trailers such as livestock trailers, equipment trailers, and agricultural bale trailers.
• EASY TO INSTALL：Easily drops into the 5th wheel hitch rails and is secured with four included hitch pins. It can be positioned over the truck axle or flipped for 3 inches of rearward displacement, providing versatile towing options. The installation and removal process can be completed in just a few minutes. Professional installation is highly recommended.
• CORROSION-RESISTANT：Protected with a highly durable carbide black powder coat finish, this hitch adapter effectively resists rust, corrosion, and harsh weather conditions such as rain, snow, and dust. It is designed to withstand prolonged exposure to the elements, ensuring long-lasting performance and reliability.
• SAFETY AND CONVENIENCE：Features a standard 2-5/16-inch heat-treated ball and built-in safety chain slots for secure trailer connection. The offset design (3 inches) accommodates different truck bed sizes, enhancing towing stability. Package includes: 1pc of gooseneck hitch with Fixed Ball, including needed hardware as shown in picture, and detailed installation instructions.

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CURT 16085 Spyder – Versatile 5th Wheel to Gooseneck

The CURT 16085 Spyder adapter allows you to convert your 5th wheel rails into a gooseneck hitch, rated for up to 25,000 lbs gross trailer weight. It mounts to all industry-standard base rails and uses a four-pin system for quick installation and removal. This gives you the flexibility to tow a gooseneck lowboy trailer and then restore your truck bed to full use in seconds.

Its design is engineered for strength and ease, making it a popular choice among pickup truck owners. The 2-5/16-inch ball is securely integrated, and the overall build quality reflects CURT’s reputation for reliable towing products. For a balance of capacity and convenience, the Spyder is a proven performer that simplifies switching between trailer types.

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• Allows pickup trucks equipped with 5th wheel rails to tow gooseneck trailers
• Rated for up to 25,000 lbs. gross trailer weight
• Mounts to all industry-standard 5th wheel base rails
• Four-pin installation and removal for easy truck bed access
• Features a welded 2-5/16" trailer ball

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KUAFU Gooseneck Hitch – Reversible Ball for Flatbeds

The KUAFU gooseneck trailer hitch is made from high-quality steel with an anti-rust coating, built to handle heavy loads without deformation. Its standout feature is the reversible gooseneck ball, which stores flush in the ball seat when not in use. This protects the ball and keeps your truck bed clear, making it ideal for flatbed or utility trucks where space is at a premium.

This hitch can tow RVs, cargo boxes, and trailer racks, expanding your truck’s versatility. The package includes all necessary installation accessories and instructions, simplifying the setup process. If you want a hitch that disappears when you do not need it, the KUAFU offers a practical, space-saving solution for your pickup.

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• Material: Made of high-quality steel, it can bear the heavy responsibility of pulling heavy objects, is not easy to be damaged and deformed, and has an anti-rust coating on the surface to ensure its long using life.
• Function: Can tow a variety of heavy objects such as RVs, cargo boxes, and trailer racks. Expand loading and transportation capacity and improve convenience; reduce travel burden and provide a relaxing travel experience.
• Reversible: The gooseneck ball can be stored in the ball seat when not in use, protecting the gooseneck ball without affecting the normal use of the truck lathe.
• Package: You will receive a Gooseneck Trailer Hitch with installation accessories and instructions.
• Installation: Use screws and U-bolts for installation, professional installation is recommended.

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Sidasu 30,000 lbs Adapter – Heavy-Duty for Semi-Tractors

The Sidasu 5th wheel to gooseneck adapter is built from high-quality alloy steel with a black waterproof powder coating, ensuring rust and wear resistance. It boasts a massive 30,000-pound load capacity, making it suitable for semi-tractors and heavy-duty pickup trucks towing large lowboy trailers. The 18-inch extra-long wall tube complies with standard gooseneck coupler tubes, providing a secure connection.

Switching between trailer types is effortless—simply install the adapter into your 5th wheel rails. This model is ideal for those who need extreme towing capability for construction equipment or heavy machinery. If your towing demands exceed standard capacities, the Sidasu delivers the strength and reliability you require for safe hauling.

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• Premium Materials:Manufactured from high-quality alloy steel and coated with a black waterproof powder finish on the surface,it is rust-proof and wear-resistant, enabling it to easily withstand even in extreme weather conditions(headwind,crosswise,hail,rain,snow,sleet)
• Primary Utility:The 5th wheel to gooseneck adapter mainly serves semi-tractor trailers and those fifth-wheel gooseneck tow trailers linked to pickup trucks
• Trustworthy Load Capacity:The 5th wheel gooseneck adapter can afford a large capacity of 30,000 pounds,it's an ideal companion for your safe driving
• Effortless Switching:The 18-inch extra-long wall tube complies with the standard gooseneck trailer coupler tube.It can be easily switched by simply replacing the accessories and connection pin
• Criterion Size:2" conforms precisely to the industry benchmarks set for all over-the-road applications

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Buyer’s Guide: What to Consider

Choosing the right detachable gooseneck adapter ensures safe and convenient towing. Consider these key factors before making your purchase.

• Towing Capacity: Match the adapter's gross trailer weight rating to your lowboy trailer's maximum loaded weight. Exceeding capacity is unsafe.
• Rail Compatibility: Ensure the adapter fits your truck's 5th wheel base rails. Most models fit industry-standard rails, but always verify.
• Ease of Installation: Look for four-pin systems that allow quick drop-in and removal. This makes switching between towing and a clear bed simple.
• Ball Storage: Some adapters have reversible or stowable balls. This keeps your truck bed flat and unobstructed when not towing.
• Build Quality: Choose high-strength steel with corrosion-resistant coatings. A durable finish extends the hitch's life and maintains safety.

Conclusion

Selecting the best detachable gooseneck lowboy trailer hitch for your pickup truck depends on your specific towing needs. For maximum capacity, the Sidasu 30,000 lbs adapter is unmatched, while the CURT 16055 offers reliable simplicity. The JOINCARZ provides a great balance of strength and adjustability.

For most users, the CURT 16085 Spyder delivers a proven combination of ease and performance. If you prioritize a clean truck bed, the KUAFU’s reversible ball is a smart choice. Evaluate your trailer weight and how often you need bed access to make the best decision.