Defender Locking Gooseneck Coupler

Integrated Lock: Push button keyed lock secures your investment with an integrated theft deterrent. Lock your trailer when coupled or uncoupled.

Automatic Latch: Line up the ball, drop the trailer, and you're on the road!

Cone Shaped Coupler: Makes lining up and hooking to your trailer easier.

Limited Lifetime Warranty

25,000 LB GTW / 7,500 LB VTW

Part Number GNC4250

Meet the B&W Trailer Hitches Defender Locking Gooseneck Coupler (GNC4250)—a next-level upgrade that makes gooseneck towing more secure. We reinvented the coupler with built-in security features and unmatched ease of use, so you can hook up confidently and hit the road sooner.

The Defender’s integrated push-button keyed lock helps protect your investment with a powerful theft deterrent.

Lock your trailer while coupled or uncoupled, giving you added peace of mind whether you’re parked at home, on the jobsite, or at a campground.

Hookup is effortless thanks to the automatic latch system—simply line up the ball, lower the trailer, and it locks into place. No extra steps. No hassle.

The cone-shaped coupler design also makes alignment easy, helping reduce frustration when connecting.

Upgrade your gooseneck with the Defender and enjoy secure, smooth, and reliable towing every trip.