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If you already have a Curt EZr Double Lock gooseneck hitch, the Curt X5 adapter turns that same setup into a base for a 5th wheel hitch. It drops right into the gooseneck ball hole and locks in using the hitch handle—no permanent changes needed. Once in place, it provides a set of industry-standard rails so you can mount common 5th wheel hitches from Curt, Reese, Draw-Tite, Husky, Valley, and others. It’s a simple way to make one truck work for both towing styles.
This adapter is built from sturdy steel with a carbide black finish and can handle up to 20,000 lbs gross towing weight and 4,000 lbs tongue weight. That strength means it’s ready for demanding loads while maintaining a secure connection. The round shank locks firmly into the gooseneck hitch, keeping everything tight and stable as you tow.
There’s no complicated hardware or long install process to turn your gooseneck into a 5th wheel setup. Just drop the X5 adapter into the gooseneck ball opening and secure it with the existing locking pin from your hitch. When you’re done towing, remove it just as easily to get your truck bed back for hauling other gear.
The all-steel construction is tough enough for frequent use, and the carbide black finish helps resist rust and wear over time. Whether you’re towing seasonally or every weekend, the X5 holds up to repeated installs and heavy use without losing its secure fit.
Customer Satisfaction Score:
84% were satisfied with this product
16% of customers were not satisfied
Ratings & Reviews
Tim S.
7/3/2018
Works great. The fifth wheel adapter has been used to tow my 19,000 gvw 5th wheel trailer from Wisconsin to Texas back and forth for 2 years.
Jimmy
3/18/2022
Product is working great. Very pleased with my purchase and etrailer’s service.
Do you have a question about this 5th Wheel Gooseneck Adapter?
Condition: Surface Scratches
Notes: Item has minor cosmetic sctahces. Otherwise unused.
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Joseph
3/3/2026
Works great !