Best Trailer Hitch Lock

Last Updated on September 1, 2020

Are you looking for the best trailer hitch lock?

I have used a number of trailer hitch locks over the years and found that getting a quality hitch lock is well worth the investment. Lesser quality trailer hitch locks are broken and offer limited protection. I have reviewed the top models currently available and after reading this article you will know my recommendations.

Check the quick list below for links to customer reviews and prices for my best trailer hitch lock picks, or read on for the full review:

  1. AMPLOCK U-BRP2516 RV and Trailer Coupler Lock
  2. Trimax Premium Universal Solid Hardened Steel Trailer Lock
  3. Fastway Fortress Maximum Security Universal Coupler Hitch Lock
  4. Blaylock TL-33 Coupler Lock
  5. Master Lock Trailer Coupler Lock

I’m always amazed at the number of people who don’t take the security of their trailer seriously. If you want to make sure that your trailer is safe and won’t easily be stolen, then you need to make sure that you invest in the best trailer hitch lock, as this will protect your trailer and provide you with peace of mind that it won’t be stolen.

Selecting the Best Trailer Hitch Lock

One of the first things that you need to consider when shopping for a trailer hitch lock is how much money you have to spend. Your budget will quickly narrow down your choices, as these hitch locks can widely vary in price.

Also consider the build quality of the trailer hitch lock and what material was used to make it. Since your trailer will most likely be out in the open, you want to make sure that you choose a lock that can stand up to the elements without being damaged. While zinc is a popular material, it won’t last as long as lock that is made from hardened steel.

Make sure that you choose a lock that is simple enough for you to use without getting frustrated. Depending on the way that your trailer is set up, and whether you have any other items on or near your hitch, some locks may not be easy to use.

Reliable locks don’t have to be as complicated as a lot of people think. It’s better to opt for a lock that is a little less complicated as long as you can easily use it.

Benefits of Having a Great Trailer Hitch Lock

A great trailed hitch makes it impossible for someone to steal your trailer. This is really important if you live in an area where this type of theft is popular or common. Additionally, these locks are generally fairly easy to operate. While some may have a certain replacement part that is necessary if they break or for installation, in general, they are simple to use.

Finally, these locks are super tough and durable. Not only will they deter the average criminal who may be looking for a crime of opportunity, but even if a criminal is prepared, they are very difficult to break or to cut. This means that they can deter even the most experienced criminal – as long as you choose one that is high-quality and built to last.

What to Look For

One feature that I like, but that isn’t available on all trailer hitch locks, is when it ships with two keys. This means that I can keep one key with me and the other in my house or loan one out to a friend who needs to borrow the trailer. This is also great if you tend to lose your keys regularly but don’t want to have to try to pick your lock yourself.

I also think that it’s a good idea to look for small features, such as a cover that will protect the keyhole and prevent dirt from getting inside. Dirt that gets inside of your lock can quickly ruin it. It’s especially important if you live in a dusty location to choose a lock with this feature so that you don’t have to worry about the condition of your lock.

How to Use a Trailer Hitch Lock

Using a trailer hitch lock is fairly easy as long as you choose the right one for your needs. Once you have finished using your trailer, you simply fit the lock over the hitch and secure it. As long as the lock is locked securely then you shouldn’t have any problems with anyone being able to remove it, cut through it, or pull it off.


One of the most important things to consider when using your new trailer hitch lock is that you have to make sure that it is the right size. One that is too small obviously won’t fit, and a lock that is too big will be loose and will tend to wiggle, which makes it easier to break and to remove.

There are some hitch locks that claim to be universal, but it’s often a better idea to look for a trailer hitch lock that will fit the exact size of your trailer. I find that this is a great way to get a tight fit and to ensure the safety of your trailer.

It’s also important to consider whether or not the lock that you choose has a master key that can open it. This is becoming a huge problem, and I recommend that you look for a lock from a company that boasts a lot of combinations. Otherwise you do run the risk of someone having a copy of your key being able to easily unlock your trailer hitch lock and steal your trailer.

Best Trailer Hitch Locks

There are multiple different trailer hitch lock designs and each has their pros and cons. The key comes down to making sure your lock fits your coupler and is not easy to pry or cut off. There are numerous models available that are just plain too easy to knock off and it’s important to select a hitch lock that will provide you with the security you need. I have reviewed the most popular models on the market for performance, durability, and construction quality.

AMPLOCK U-BRP2516 RV and Trailer Coupler Lock

This is a great trailer hitch lock if you are able to spend a little bit more in order to have a high-quality and more durable option for your trailer. It’s designed to prevent anyone from being able to take your trailer without your permission, and since it is durable and hardy, it won’t be damaged when used in extreme weather or in hot or cold temperatures.


  • Great for use in all climates
  • Easy to use with the AMPLOCK push/lock system
  • Molded to fit the shape of the trailer
  • 12 pounds makes it difficult for someone to try to break


  • Can be a little loose and wiggle
  • Must have the right type of coupler for the lock to work

Trimax Premium Universal Solid Hardened Steel Trailer Lock

This trailer hitch lock has a few different features that make it a great choice for use by most people. Not only will it prevent dirt from entering the keyhole, which can cause the lock to fail, but it also is designed out of ballistic grade nylon housing. This means that this lock can easily stand up to wear and tear without being damaged, which makes it a great option when you want to protect your trailer from theft.


  • Fits most coupler types
  • Features a dual ratchet locking system
  • Offers 360 degrees of protection
  • Hole cover prevents dirt from entering key hole


  • Can be difficult to remove the key
  • Doesn’t fit well on larger hitches

Fastway Fortress Maximum Security Universal Coupler Hitch Lock

One of the best features of this trailer hitch lock is that it is in a unique shackle shape. This helps trailer owners by preventing the lock from being pried and torn off of the trailer, which would make it easy to take the trailer. Not only that, but the lock is fairly easy to tighten on most trailers, which ensures that it won’t wiggle or wobble out of position when attached.


  • Fits 1-7/8”, 2”, 2-5.16” tongue couplers
  • Includes two keys
  • Features an anti-lock design to prevent the lock from being broken open
  • Comes with a limited lifetime warranty


  • Interior tumbler can shift out of position, causing the lock to break
  • Can be difficult to operate and to tighten the bar

Blaylock TL-33 Coupler Lock

While this trailer hitch lock may be a little rough around the edges and not the most visually attractive option on the market, it’s still a great choice for a lot of people due to the lower price tag as well as how durable and strong it is. it’s designed to provide you with plenty of security and is one of the easier locks to use, making it a great choice for new trailer owners who want security but don’t want to worry about how to operate their hitch lock.


  • Designed for both recreational and commercial use
  • Fits more than 30 coupler style brands
  • Has three hole positions for multiple applications
  • Made from aircraft aluminum


  • Tends to have rough edges
  • Can be cut by a determined thief

Master Lock Trailer Coupler Lock

One of the best features of this trailer hitch lock is that it comes with a pair of keys, which is great for anyone who is prone to losing their keys or wants to share access to the trailer with another person. It is an attractive lock that is designed to keep the trailer secure, and it won’t become damaged in bad weather, thanks to its high-quality construction.


  • Fits 1-⅞,” 2,” and most 2-5/16” couplers
  • Great for use on trailers as well as vehicles and RVs
  • Includes an advanced locking mechanism, making it harder to pick
  • Zinc construction resists corrosion and rust


  • Locks are all keyed the same
  • Lock tends to be easy to pick

For more security guides and tips read these articles:

The Trimax UMAX100 Premium Universal lock is the best choice on this list. Not only is it made from solid hardened steel, which means that it is going to be able to easily stand up to being hit or damaged, but it fits on a wide variety of trailer hitches. If you don’t know what size hitch you have or if you want to be able to use this lock on a few different trailers, then this is a good idea. It will protect your lock from dirt and dust damage due to the keyhole cover, and it features a ratchet lock system that makes it very difficult for someone to try to break.

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