Best Trailer Hitch Lock

After reading this article you will know the best trailer hitch lock available and how they can protect your trailer from theft.

If you are anything like me, you have a lot of hard earned money invested in your horse trailer.

A lot of money! 

And you want to keep your horse trailer out of the sticky fingers of would be trailer thieves.

The best way to do this is with a high quality trailer hitch lock.

Whether it's your horse trailer, travel trailer, or a flatbed, you want to make sure you have all of your trailers secured with a tow ball lock designed to protect your trailer best.

Just think about the value of your trailers.

For very little money you can make a huge difference in protecting your trailer.

Like my grandfather told me, you can't put a price on piece of mind.

Let's dig right in to the list of best trailer coupler locks out there.

Stick around after the recommendations and read some more great tips on keeping those would be burglars away from your trailers.

Check out these essential articles for more tips and recommendations.

Best Trailer Hitch Locks

Trailer Coupler Lock

Our Rating

More Info

Coupler Size in Inches

reese hitch trailer lock

Reese Towpower 72783

1-7/8, 2 and 2-5/16

trailer hitch coupler locks tow ready gorilla guard

Tow Ready 63228


master lock trailer coupler locks

Master Lock 377KA

1-7/8 and 2-5/16

proven industries trailer coupler lock

Proven Industries 2516

2 5/16 and more

amplock trailer lock for coupler hitch

Amplock U-BRP2516 

2 5/16

Our Picks for the Best Trailer Hitch Locks

There are many cheap trailer locks and hitch coupler locks, but they are easily broken, leaving your trailer ripe for the taking.

Cheap locks can be broken off with a pair of bolt cutters or a wrench, making them relatively useless in protecting your property.

For this reason we recommend one of the following five high quality and durable security locks for your trailer hitch.

1) Reese Towpower (72783) Universal Coupler Lock

reese hitch trailer lock

This hitch lock by Rease is built strong and is very durable.

It comes with a heavy duty locking mechanism that isn't going to be easily broken or messed with.

It is made of quality steel and is painted and corrosion resistant.

I really like how it comes in a universal fit size, meaning it is going to work for all common hitch sizes as it is adjustable.

Hitches sized 1 7/8, 2 inches, and 2 5/16 will all fit.

The Rease Towpower Coupler Lock is four inches wide and has a three and a quarter inch coupler head.

It also comes in a few different colors. I personally like the yellow one pictured above.

2) Tow Ready (63228) Gorilla Guard Coupler Lock

The Gorilla Guard trailer lock has a very different design than the Reese. But don't let that fool you, this one is a beast. 

Designed to simply be slid over your coupler, it is made to withstand being hit with a hammer without breaking and coming off.

Thieves are not going to get this one off your trailer.

The Tow Ready will fit a 2 inch ball and the company believes in it so much that they include a one year warranty (but you likely won't need to use it).

This hitch lock is easily one of the best out there right now, strong, great design, and easy to use.

3) Master Lock 377KA Trailer Coupler Lock

Master Lock is well known for their everyday locks, but they also make a darn good trailer lock too.

The MasterLock 377ka is an excellent choice that comes in a couple sizes, 1 7/8 in and a 2 5/16 in model. Both are chrome and come with a couple keys (which I find incredibly handy).

This hitch and coupler lock has a much more aerodynamic profile, they say makes it more resistant to being hit with a hammer or someone attempting to pry it off your trailer. 

Just like the previous models, this one is easy to install. Once fit on it will stay snug and resistant to would be lock pickers. 

4) Proven Industries 2516 Trailer Lock (Ultimate Hitch Lock)

The last two entries on our list are for those who demand the best trailer and hitch locks available.

Whichever of these two you choose, you can be sure to sleep easy at night knowing your trailers are safe and where you left them.

The Proven Industries 2516 is guaranteed bolt cutter proof.

This bad boy is engineered so precisely that the company has backed it up with a lifetime guarantee. This is one of  the best two trailer locks you will find.

Made from super strong 1/4 in steel and surrounded with a thick armor guard, this hitch lock will stay put once locked on. 

It also comes in every popular size, meaning you can get one for all of your trailers and keep them secure. 

The Proven Industries 2516 comes with a healthy price tag, but is well worth it. Hands down one of the best locks out there. 

5) Amplock U-BRP2516 

amplock trailer hitch and rv lock

Arguably the number 1 strongest, most durable hitch lock on the market.

AMPLOCK has patented security technology they guarantee will keep your valuable trailers secure. 

Each of these trailer locks is constructed with the highest quality components. 

- Strong Stainless Steel Construction

- Durable Ducted Cast Iron Heat Reinforced Steel

- Completely Rust Resistent

- Completely Unique Key System

- Sizes available to fit all popular couplers

Easily one of the most expensive hitch locks available.

In this case, you absolutely get what you pay for.

And with this hitch lock you can go to bed at night certain your trailer is secure.

It is Easy to Steal an Unlocked Trailer

Sadly, I have a number of friends who have had trailers stolen over the years.

And odds are, you do as well. 

I still cannot believe how many people leave their expensive trailers unlocked, in plain view of would be thieves. 

With the relative low cost of a quality trailer lock, there is no excuse for letting this happen to you. 

Whether you have one trailer, or a dozen, there are many quality lock options available to you. 

6 Tricks You Can Use to Keep Your Trailer Secure

Almost all thieves are opportunists. And because of this, they are looking for the easiest score. You can make sure that isn't you by following these steps.

  • When trailering away from home, park your trailer in well lit areas
  • Park your trailer in a manner that would be difficult for someone else to maneuver it out
  • Personalize your trailer. Thieves want to blend in, and a unique trailer is harder to steal
  • Always secure your trailer with a high quality coupler lock when not hitched to your vehicle 
  • Secure trailer with a wheel clamp
  • Installing an anti-theft GPS device is the final touch

Follow these simple guidelines and you will be the last person a thief will want to mess with.

Check out our recommendation on the best horse trailer cameras to add to your horse trailer security.

Any other tips to keep your trailer's secure? Tell us about them in comments!