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30K Lbs GTW Gooseneck to 5th Wheel King Pin Adapter – Fits 4" Round Tube Gooseneck Trailers, Converts for 5th-Wheel Hitch Towing, Heavy Duty Reinforced Rib Design, 5th wheel lube plate included
4.5 (98 items)
Limited Time SaleUntil the end
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20
13
$113.99 cheaper than the new price!!
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New $189.99
Product details
| Management number | 219391792 | Release Date | 2026/05/03 | List Price | $76.00 | Model Number | 219391792 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
- Cost-Saving Compatibility Solution – No need to install a full gooseneck hitch system hitch for your pickup This adapter converts your gooseneck trailer’s 4" round tube to a 2" standard kingpin interface, letting your existing 5th-wheel hitch tow the gooseneck trailer seamlessly
- Easy Bolt-On Installation – No welding, cutting, or professional modifications required! Replace the original gooseneck ball coupler on your trailer’s 4" round tube with basic hand tools in 15 minutes. Perfect for truck owners who prefer hassle-free at-home upgrades
- Heavy-Duty Load Capacity for Reliable Towing – Built with heavy duty carbon steel, this adapter boasts a 30,000 lbs GTW (Gross Trailer Weight) and 4,500 lbs tongue weight rating. Ideal for hauling heavy cargo, farm equipment, and construction materials without wobbling or failure
- Dual-Towing Flexibility Without Hitch Removal – Keep your pickup’s 5th-wheel hitch intact while gaining the ability to tow gooseneck trailers. Switch between 5th-wheel RVs and gooseneck flatbeds in minutes—no repeated uninstallation/installation, perfect for multi-purpose towing needs
- Precision Fit for 4" Round Tube Trailers – Engineered with a tight 0.5mm gap tolerance to fit all standard 4" round tube gooseneck trailer frames. Eliminates towing noise and instability at high speeds, ensuring a secure, smooth ride whether on highways or rough off-road terrain
| UPC | 717839221307 |
|---|---|
| Brand Name | FlexHitch |
| Pull Force | 30000 Pounds |
| Manufacturer | FlexHitch |
| Model Number | GC-021S |
| Material Type | Alloy Steel |
| Automotive Fit Type | Universal Fit |
| Included Components | 5th Wheel Lube plate x2, Gooseneck to 5th Wheel Adapter |
| Manufacturer Part Number | GC-021S |
| Compatible with Vehicle Type | RV, Truck |
| Manufacturer Warranty Description | 6 month |
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