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Best Trailer Hitch Lock

Best Trailer Hitch Lock 2021: Reviews + Buying Guide


While it can be very easy to think that it will never happen to you, the reality is that if you own a trailer, you are at risk for having it stolen.

While nothing can ever completely eliminate the chances of having your trailer be stolen, you can drastically reduce the chances of it happening if you invest in a good trailer hitch lock.

These locks are simple, inexpensive items that can prevent you from losing tens of thousands of dollars.

However, you obviously don’t want just any old lock on your trailer, you want the absolute best trailer hitch lock available. That is where this article is meant to come in handy.

We are going to be reviewing a lot of different locks to tell you the best one. If you want to know what we think the best lock options is, it is the Trimax Premium Trailer Lock.

A Spotlight On Some of The Best Trailer Hitch Lock 2021 :

Reese Towpower 72783 Universal Lock


Trimax UMAX50D Deluxe Universal Trailer Coupler Lock


Master Lock 377KA Trailer Hitch Lock


Lenink Trailer Hitch Coupler Lock


Reese Towpower 7088300 Coupler Lock


Reese Towpower 72783 Universal Lock

For the first entry on our review list, we are going to be doing a review of the Reese Towpower 72783 Universal Lock.

This is a good candidate for starting off our review list since, among other things, this is an affordable and decently constructed lock that provides you with the peace of mind that you want out of a trailer lock.

For reasons that will be explained later on, it is important to have a trailer lock that is extremely visible, as that lets people know that your trailer has at least some protection.

With its large profile and extremely bright yellow color, the Reese lock has absolutely no issues whatsoever standing out. Every would-be criminal cases will see the lock and think twice before trying anything. The lock is also very easy to quickly attach and detach from your trailer hitch.

While overall the Reese is a decent, affordable trailer lock option, there is one glaring issue that we want to mention, which has to do with the fact that this is a universal trailer lock.

Now, to give credit where it is due, this does have the advantage of making it super easy to find a key, since you can just get one made at any key maker. At the same time, you can probably see the major issue that can arise from this.

Having a universal lock makes you more vulnerable since more people are more likely to have a key. You may be curious why that flaw doesn’t completely disqualify this lock for us.

Well, as you will read about later on in our buying guide, a lock’s primary method for protecting your trailer is by just being there, which will deter a majority of criminals. So, it is still an effective option.

  • Pros
  • Simple lock mechanism.
  • Bright, vibrant yellow look.
  • Extremely noticeable.
  • Inexpensive lock.
  • Cons
  • Oddly, this is a universal lock.

Trimax Premium Trailer Lock

For this second review on our best trailer hitch lock, we want to take a look at a very high-quality lock in the form of the Trimax Premium Trailer Lock. We will discuss this later on in the review, but all you need to know for the moment is that this is one of the best lock brands around and it is synonymous with quality. So, this is a good lock option that we are interested in taking a look at.

The main reason to give this lock a try is because of the sheer quality that it is capable of bringing to the table. If you want a lock that allows you to sleep at night knowing that your trailer is 100% safe, then this is the lock for you.

It is made from extremely strong metal that can stand up to just about everything that can be thrown at it (this includes man-made damage, tools, and natural forces like weather and rust). This is definitely one of the best locks that you are going to find on the market. As an extra bonus, this lock looks very tough and intimidating, which should go a long way towards deterring most would-be criminals.

The biggest issue with this trailer lock is probably its cost. This is a lot more expensive than your average trailer hitch lock, especially if you go by the standards set by this list.

While this particular lock is only around $50, there are very similar options from this brand that can go as high in price as around $200. If you aren’t familiar with this brand, Trimax, they are known for making extremely high-end locks that are tough and reliable, but they are also expensive, so that is a downside that you just have to accept for the quality of the lock that you are getting.

  • Pros
  • Durable, strong lock.
  • One of the best locks on the market for trailers.
  • A very trustworthy and reliable trailer lock.
  • Lock looks intimidating enough to scare off criminals.
  • Cons
  • Noticeably more expensive than most other trailer hitch locks.

Master Lock 377KA Trailer Hitch Lock

You would probably be able to guess this just based on the name, but the Master Lock 377KA Trailer Hitch Lock is an extremely well-made lock (it does have the word Master Lock) in its name. While we ultimately decided against naming this our overall best trailer hitch lock, it would probably be a pretty close runner-up, it is that well-crafted.

The first and most important thing to note about this lock is that it is reinforced with zinc, which helps to improve the overall strength and longevity of the lock.

While this is an overall pretty strong lock, we will say that it is an extremely small, compact option. It is so compact in fact, that it can actually be difficult to see without taking a closer look. As you have no doubt come to see from our review list, one of the most important things to keep an eye out for when buying a lock is how intimidating it looks. This is just sadly not a very scary looking lock, but merely having a lock should still be good enough.

  • Pros
  • Uses reinforced metal.
  • Contains zinc for extra strength and durability.
  • Extremely difficult to break open.
  • Cons
  • Not very visible.

Lenink Trailer Hitch Coupler Lock

In this second to last review, we are going to be doing a review of the Lenink Trailer Hitch Coupler Lock. This lock is notable because, among other reasons, it is the cheapest lock that we have reviewed on our entire article. While buying cheap locks typically isn’t the best idea, the Lenink is actually a pretty solidly made lock given that it costs about $10. A good budget item or gift item to be sure.

Of course, as we have emphasized numerous times during the course of this review, this is a pretty cheap lock overall. So, we figured that we would point out the main issue with this lock, which is the fact that like all cheap products, it isn’t all that strong. This lock isn’t especially vulnerable or anything like that, but it also isn’t the strongest, that is for sure.

  • Pros
    • Cheapest lock on this list.
    • Decently visible.
    • Very straightforward to use.
  • Cons
  • Pretty cheap lock.
  • Prone to breaking.

Reese Towpower 7088300 Coupler Lock

For the last review on our best trailer hitch lock list, we are going to be doing a review of the Reese Towpower 7088300 Coupler Lock.

Many of you will likely remember that we began this article by reviewing a lock from Reese that, while well-made overall, had some issues that we mentioned. We are glad to say that we feel that this lock improves on some of those weaknesses, which is why it is being included as a separate review.

The first and most immediate change with this lock that you are going to notice is just how durable and strong it is. This is probably the most solidly built lock that you are going to find from Reese.

With strong metal that has been reinforced by zinc, it is protected against physical damage and long-term damage caused by rust or corrosion. It also has a firmer locking mechanism when compared to the original Reese trailer lock that we featured.

Some things have remained the same with this lock, in particular, there is the fact that this is a universal trailer lock. As you already know, this being a universal lock means that it can be used on just about any size trailer hitch.

The biggest issue that we have with this other lock from Reese has to do with the keys that they include with the lock. As you will see for yourself if you actually buy this lock, you get two keys that work with the lock, but they are fairly small and extremely easy to misplace.

If you do misplace them, then getting them replaced is a big hassle, which is a distinct change from the first lock that we reviewed from them, which had an easy key replacement method.

  • Pros
  • Very durable.
  • Able to stand up to rust and corrosion.
  • Still fits a wide variety of trailer hitches.
  • Able to resist conventional lockpicking tools.
  • Cons
  • Small keys are extremely easy to misplace.

An In-Depth Buying Guide for Trailer Hitch Locks

For the next portion of our best trailer hitch lock list, we are going to be doing something that is more informational than the plain product reviews that we did above (you likely gathered this from the subheading).

In this section, we are going to explain a bit more about whether you need a trailer hitch lock and what to look for when buying a lock. While a lot of the information is either already going to be known to you or be quite obvious, we still think that this buying guide will be helpful.

How Vulnerable Are You?

The first thing that we should cover in this buying guide is going over exactly how vulnerable you are to trailer theft.

We want to answer this question first because we imagine that a good deal of you may feel like there isn’t much of a threat to your trailer from potential thieves. While that might be true, there are pitfalls that every trailer owner has to be aware of. The two that we particularly want to draw your attention to are accidents and thefts.

The first thing is accidents. Now, this may sound ridiculous to say, but believe it or not, a lot of people may accidentally take unpicked trailers.

This is especially true if you store your trailer in a crowded lot. The second issue is a bit easier to comprehend, which is thievery. While not as popular as cars, there are plenty of thieves out there who attempt to steal trailers, with a favorite target being unlocked trailers. Again, this is something that you have to be more aware of if you store your trailer in a crowded lot that others can easily access.

So, even if you think your trailer isn’t vulnerable and you don’t need to worry about losing your trailer, there are some issues that you do need to be concerned about.

How Locks Stop Criminals

The next thing to mention in this buying guide is how locks actually work to prevent criminals. Again, this is going to sound strange since the answer seems obvious, but if you think back to some of our reviews on our list, you will likely remember that we talked a lot about how the main thing to look for in a lock is deterrence, not necessarily strength; we wanted to explain what that means.

The vast majority of people who steal are easily deterred. They are criminals of opportunity; they aren’t going to bust out a pair of bolt cutters or a lock pick. So, just having a lock, especially one that looks imposing (even if it actually isn’t that difficult to break) is going to scare off the vast majority (and we do mean vast majority) of potential trailer thieves.

Note About Sizes

Before moving onto the next part of the buying guide, we do want to mention that not all trailer locks are universal. Some are meant to fit a specific size range. If you don’t know the exact size measurements of your trailer hitch, and we imagine a lot of you might not off the top of your head, we would encourage you to invest in a universal lock.

Picking The Right Trailer Hitch Lock

For this next part of our buying guide, we want to talk about what factors you need to be thinking about when it comes to buying the best trailer hitch lock. A lot of what we will talk about in this section will be review, since we mentioned a lot of these factors in our various product reviews above.

How The Lock Looks

We mentioned this above, but since it is so important, we want to mention it again. It is essential that you buy a lock that looks tough and that is easily visible.

You really want to send a message to anyone who is potentially getting a bit too curious about your trailer that it is protected. The lock should be very easy to see (bright colors like red or yellow help here) and it should look intimidating, so being large and made of a tough material is helpful.

How Strong The Lock Is

While we have talked a lot about how intimating locks look, we don’t want to mislead you on the importance of getting a strong lock. It can be very important for stopping those very few criminals who aren’t stopped by the mere presence of a lock. But what exactly should you be on the lookout for when it comes to finding a “tough” lock?

Well, for starters, you want to make sure that the lock is physically tough. Look for something that can’t easily be broken open with physical tools (locks will usually advertise if they have added resistance to stuff like this). Likewise, the lock should be built to resist common lock picking tools like drills (again, locks will typically advertise if they are extra resistant in this regard).

If The Lock Is Resistant To Wear And Tear

Assuming you are like most people, then you probably don’t want to have to constantly replace your lock because it has rusted, or it has begun corroding.

To avoid doing this, try and find a lock that has been built with this sort of issue in mind. Given that cheap metal is very prone to rust and corrosion, you want a high-quality lock that has preferably been reinforced with a metal that is resistant to rust (such as zinc).


We would encourage anyone who still has some questions to leave them down below, we are willing to answer any and all questions that you might have about trailer hitch locks, even if they don’t relate directly to our best trailer hitch lock article.

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