Curt
Curt Helux Coil-Spring Gooseneck Pin Box (20K, fits Lippert Rhino frames)
20K lbs
Max Trailer Weight
3.2K lbs
Max Pin Weight
DIY or Pro?
Installation
Availability
Where to Buy
Requires
Gooseneck Ball
Compare Options
Related Products
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Weight Rating
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Mount
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The 22.5K Goose Box replaces your fifth wheel's pin box so the trailer rides on a gooseneck ball with built-in air suspension. It's the cleanest way to convert to gooseneck and the air bag soaks up chucking far better than a rigid coupler, all with no head taking up bed space.
Weight Rating
22,500 lbs
Mount
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Weight Rating
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Mount
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MSRP
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Got Questions?
Frequently Asked Questions
The Curt Helux Coil-Spring Gooseneck Pin Box (20K, fits Lippert Rhino frames) is rated for 20,000 lbs gross trailer weight (GTW) and 3,200 lbs vertical trailer weight (VTW — the pin weight your truck carries). Always verify your truck's tow rating before purchasing.
This hitch is considered DIY-friendly — most owners can install it with basic tools.
The Curt Helux Coil-Spring Gooseneck Pin Box (20K, fits Lippert Rhino frames) is available from Amazon. Use the "Where to Buy" buttons above for current pricing and availability.
The Gen 3 Goose Box (20K) swaps your trailer's pin box for an air-ride gooseneck coupler, freeing up the truck bed entirely. The air cushion smooths the ride and cuts chucking, making it the standout pin-box conversion if you'd rather pull a fiver off a gooseneck ball.