The King

The KingUnlike a common king pin lock, the patented King Lock fully covers and encases the entire King Pin hitch! The Kings locking mechanism covers 180 degrees of the King Pin on one side and 34 degrees on the opposite side. This unsurpassed protection makes The King the most secure 5th wheel king pin lock of this type on the market. The King installs in seconds and fits all King Pin trailer hitches.

6061 Solid Aluminum lock body

to a straight bolt-on style trailer coupler

the Bull protects the entire hitch—it fully encases the coupler making theft very difficult

Model S175 fits them both and will provide a great level of security

please see Model 2178-D1

If you have been looking for a Jayco Trailer Lock then you can stop here

It is incredibly strong and is available in 2” or 2 & 5/16” ball sizes

This style trailer coupler is only found on AIRSTREAM trailers

This model is the same as model 400A but has a larger opening in the back to fit rear and side enclosed trailer doors

Model 2516 fits most trigger latch and thumb latch couplers

Designing the best coupler locks is not an easy task

This version puck lock has a step back