7 Best Trailer Locks in 2020: Theft Prevention for Trailers

Best Trailer Lock

A trailer is one of the biggest assets that many people invest on. They enable you to haul more luggage by just hitching them in your truck. 

Hence, it is always important to find ways to keep your safe and this should be easy with the best trailer lock.

A good trailer locks helps to deter potential thieves and hence in turn ensuring you do not lose the expensive trailer or anything priced on it.

Typically, no lock is 100 percent unbreakable. But, a good quality one will give the thieves a harder time.

In this piece, we are all about helping you choose the most secure trailer locks with reviews of 7 top-rated models and a comprehensive buying guide. 

You can also read other product reviews of wheel locklocking lug nutsteering wheel lock.

IMAGE

PRODUCT

​FEATURES

Master Lock - Universal Size Fit Trailer Locks

1. Master Lock 389DAT (Advanced Locking Mechanism with Universal Fit)

  • Resist corrosion and rust
  • Bright red color deters thieves
  • Universal coupler fit
  • Simple installation and installation
Master Lock Universal Trailer Coupler Lock

2. Master Lock 379ATPY (Best Overall)

  • Cut and pry resistant
  • Easy installation and removal
  • Strong zinc alloy material
REESE Towpower 72783 Universal Coupler Lock

3. Reese Towpower 72783 (Best Universal Fit Lock)

  • Universal fit lock
  • Adjustable locking bar
  • Corrosion and rust resistant
  • Highly affordable
Reese Towpower 7042100 Adjustable Coupler Latch Lock

4. Reese Towpower 7042100 (Best Budget Trailer Lock)

  • Easily and conveniently adjustable
  • Higher couple compatibility
  • Reduced overall weight
  • Highly affordable
Trimax UMAX100 Premium Universal Hardened Steel Trailer Lock

5. Trimax UMAX100 (Tough Lock with Universal Compatibility)

  • Universally compatible lock
  • Protective ballistic grade nylon
  • Rugged and durable overall construction
Tow Ready 63228'Gorilla Guard Coupler Lock

6. Tow Ready 63228 (Perfect Choice for 2-Inch Trailer Coupler)

  • Will fit most 2-inch trailer coupler
  • Sturdy metal construction
  • Comes with two keys
Master Lock 377KA Trailer Coupler Lock

7. Master Lock 377KA (Heavy Duty Trailer Lock with a Daring Look)

  • Advanced locking mechanism
  • Weather-resistant
  • Fast and easy installation
  • Weather-resistant construction

PRODUCT

1. Master Lock 389DAT 

(Advanced Locking Mechanism with Universal Fit)

Master Lock - Universal Size Fit Trailer Locks
  • Resist corrosion and rust
  • Bright red color deters thieves
  • Universal coupler fit
  • Simple installation and installation

2. Master Lock 379ATPY 

(Best Overall)

Master Lock Universal Trailer Coupler Lock
  • Cut and pry resistant
  • Easy installation and removal
  • Strong zinc alloy material

3. Reese Towpower 72783 

(Best Universal Fit Lock)

REESE Towpower 72783 Universal Coupler Lock
  • Universal fit lock
  • Adjustable locking bar
  • Corrosion and rust resistant
  • Highly affordable

4. Reese Towpower 7042100 

(Best Budget Trailer Lock)

Reese Towpower 7042100 Adjustable Coupler Latch Lock
  • Easily and conveniently adjustable
  • Higher couple compatibility
  • Reduced overall weight
  • Highly affordable

5. Trimax UMAX100 

(Tough Lock with Universal Compatibility)

Trimax UMAX100 Premium Universal Hardened Steel Trailer Lock
  • Universally compatible lock
  • Protective ballistic grade nylon
  • Rugged and durable overall construction

6. Tow Ready 63228 

(Perfect Choice for 2-Inch Trailer Coupler)

Tow Ready 63228'Gorilla Guard Coupler Lock
  • Will fit most 2-inch trailer coupler
  • Sturdy metal construction
  • Comes with two keys

7. Master Lock 377KA 

(Heavy Duty Trailer Lock with a Daring Look)

Master Lock 377KA Trailer Coupler Lock
  • Advanced locking mechanism
  • Weather-resistant
  • Fast and easy installation
  • Weather-resistant construction

1. Master Lock 389DAT – Advanced Locking Mechanism with Universal Fit

Master Lock - Universal Size Fit Trailer Locks

Master lock universal lock for trailers is all you want to secure your trailer. Build to perfection; the lock offers ultimate security. With universal compatibility, there is no struggle looking for ideal trailer lock. The system can lock any coupler starting from 1-7/8, 2, and 2-5/16 inches.

The designing of this trailer lock isn’t trial and errors. Made of heavy-duty materials, it becomes hard for thieves to compromise it. Moreover, the locking mechanisms boast hardened steel. This means there is no sewing; prying or hammering will break it.

Apart from the structural strength, the lock has a bright color painting. This is important as it deters thieves from tampering with. The paint also protects the lock from rust, corrosion and extreme weather conditions.

Fitting this device in your trailer coupler is a minute job. Its overall construction focuses on security and ease of installation. With unique lock design, there is no other key can open it. Thereby, it gives a trailer perfect protection.

While this lock might be a little smaller for some trailer couplers, it should still fit most perfectly.

Pros:

  • Heavy-duty materials
  • Weather damage protected
  • Bright thieves deterring paint
  • Picking and prying resistant

Cons:

  • A little too small for some trailer couplers

2. Master Lock 379ATPY – Best Overall

Master Lock Universal Trailer Coupler Lock

The Master lock universal trailer lock brings joy and confidence. Instead of leaving your pricey trailer exposed the lock secures it exceptionally well. With the ability to lock your trailer coupler, it means you can enjoy improved safety.

Well, the construction of this lock is robust. Unlike the cheap locks, it has durable materials that resist prying and cutting. Furthermore, the materials used in construction resist corrosion and rusting. 

Apart from high strength, the lock is also versatile. Boasting universal compatibility, it can fit a variety of trailer hitches. The lock is compatible with 1-7/8 inches, 2 inches and 2-5/16 inches couplers. Therefore, it can be used even for people with more than one trailer.

Installing and removing this lock is a piece of cake. Possessing advanced locking mechanism, there is no more prying, and sawing.

While this trailer lock could be more secure, for its price it still provides adequate security.

Pros:

  • Strong zinc alloy
  • Easy installation and removal
  • Cutting and prying resistant
  • Multiple couplers fit

Cons:

  • Could be more secure

3. Reese Towpower 72783 – Best Universal Fit Lock

REESE Towpower 72783 Universal Coupler Lock

The Reese Towpower universal coupler lock is built tpo give you peace of mind. It is a reliable system that keeps thieves away from your trailer or RV as breaking it will be a mountainous task.

It has heavy-duty base and steel bar and thus cutting will take way more time and energy than what any thief is willing to put in

Forget other inferior locks available on the market. With this one you get high adjustability as it boasts 11 locking positions. It’s therefore simple to adjust for perfect fit. The lock fits in 1-⅞, 2, and 2-5/16 inch couplers.

Besides having heavy duty construction, safety goes beyond this. The base features high visible yellow paint. The color helps in improving lock visibility, thereby ideal for all trailers.  

The aluminum base looks and feels a little weak but you will be amazed at just how tough and secure it is.

Pros:

  • Adjustable locking bar
  • High visibility painting
  • Universal fit design
  • Corrosion and rust resistant
  • Highly affordable

Cons:

  • A bit weak aluminum base

4. Reese Towpower 7042100 – Best Budget Trailer Lock

Reese Towpower 7042100 Adjustable Coupler Latch Lock

Reese Towpower 7042100 is one of the best trailer coupler locks. And this is thanks to Its sturdy construction from robust materials. The lock boast nickel plated steel shaft to offer reinforcement and this ensures the lock is hard to cut or pry.

Well, the base boast brushed aluminum. It protects the lock from corrosion or rust. Apart from durability, the brushed aluminum improves the overall appearance. And for more convenience, the lock comes with two keys.

This is also a more adjustable lock boasting of 6 locking positions and it is easy to fit in your latch without struggles. Moreover, this lock can adjust from 5/8 to 3 inches. Thereby, it can work with various trailer couplers smoothly.

While this aluminum body trailer lock might be weaker than the hardened steel ones it is still quite tough and highly secure

Pros:

  • Highly affordable
  • Corrosion and rustproof design
  • High coupler compatibility
  • Reduced overall weight
  • Easy to adjust

Cons:

  • Weaker than full steel locks

5. Trimax UMAX100 – Tough Lock with Universal Compatibility

Trimax UMAX100 Premium Universal Hardened Steel Trailer Lock

Trimax UMAX100 trailer lock is an outstanding product that will never disappoint. With this lock, you enjoy enhanced security of your trailer. Featuring 360 degrees hardened steel; there are no chances of easy breaking.

Once you add this lock to your camping accessories, you can be sure your trailer, boat or RV is safe.

The lock boasts sleek ballistic grade nylon housing. This means superior coating and protects the base from corrosion. Furthermore, with keyhole having a cover, it keeps dirt out. Thus, you won’t experience jamming when opening.

Forget those locks that only fit specific trailers. This one boasts universal compatibility. It can fit in couplers from 1-7/8, 2, to 2-5/15 inches. Therefore, regardless of your trailer hitching coupler, this lock fits perfectly.

At 6 pounds, this trailer lock is a little heavier and it is also relatively pricier but the best thing about it is that it provides top notch security.

Pros:

  • Impact resistant nylon cover
  • Rugged design
  • Attractive cover
  • Covered keyhole
  • Universal fitting

Cons:

  • A bit bulky; 6 pounds

6. Tow Ready 63228 – Perfect Choice for 2-Inch Trailer Coupler

Tow Ready 63228'Gorilla Guard Coupler Lock

The Tow ready 63228 is a heavy -duty product that can’t let your trailer get stolen. Forget about the cheap products; this one is one of the best trailer coupler locks around. The designing and construction enable it delivers unmatched performance.

If you usually your trailer unattended, you can now use this lock to keep thieves away. The sturdy metal construction means breaking it is a mountain job. Whether using hammers, drilling or sawing, the lock never compromises your trailer security.

Installing locks sometimes it becomes a hard task. But, once you have this, it’s a breeze. Its design fits ball socket on the trailer while the solid bar wraps the coupler. Boasting two keys, spare one will save you in case of accidental loss.

Well, the quality of this trailer coupler lock is superb. That is why when you buy it, the lock enjoys a full year warranty. This a great feature which lets people enjoy securing their trailers with high confidence.

This trailer lock is notably pricier when compared to others on our list but for its quality makes it worth the extra bucks.

Pros:

  • Has two keys
  • Backed by a 1-year warranty
  • All metal construction
  • Hard to break

Cons:

  • Relatively pricey

7. Master Lock 377KA – Heavy-Duty Trailer Lock with a Daring Look

Master Lock 377KA Trailer Coupler Lock

Master Lock 377KA coupler lock immobilizes your trailer until you are ready to go. Unless you unlock it yourself, there is no one else without the key. With its daring look, the lock boasts excellent performance to keep a trailer safe.

Unlike others that feature weak materials, this one is entirely metallic. Therefore, it makes it hard for robbers to pry or use other methods to cut it. Besides, the locking mechanism is superb which allows you enjoy outstanding trailer security.

Notably, the compatibility is incredible. This lock can be used in all couplers from 1-7/8 inch, 2 inch and 2-5/16 inch trailer couplers. Due to this versatility, when you have a new trailer, there is no need to buy a new lock.

The body is sleek and resistant to by extreme weather conditions. Therefore, durability is a guarantee.

The key pattern is quite simple and hence easy to duplicate but unless you lose your keys this should hardly be a concern.

Pros:

  • Weather resistant
  • Advanced locking mechanism
  • Fast and easy installation
  • Great couplers compatibility

Cons:

  • Key pattern is easy to duplicate

How to Buy the Best Trailer Locks

How to Buy the Best Trailer Lock

Buying a trailer lock can be tricky especially with the countless options out there that look good enough. But for a smooth buying process and to ensure you make the right decision, you need to watch out for the following things.

1. Construction Material

Before anything else, the material used to make the trailer lock should always be your first consideration.

Different materials offer varying degrees of protection and the most common ones are steel, aluminum and zinc alloy. 

Some material like hardened steel offers top notch security but are often more expensive. Aluminum on the other hand makes some more lightweight locks but they are often not as tough as hardened steel ones.

2. Size of the Lock

The size of a lock is another essential feature to consider. Mostly, large locks are better as the size makes them more secure. Furthermore, they can be used with various trailers with ease. 

Small coupler locks also work well for many trailers but,they sometimes get stuck requiring you to use some force.

It is advisable then, to look for a lock that can fit in your trailer coupler. This will avoid hassles especially when using them under extreme weather.

3. Locking Mechanism

Some of the locks have inbuilt locking mechanisms. This is a great feature that saves your money. Also, with a locking system on the lock, it adds more strength. In many cases, these types of locks come with hardened locking mechanisms.

The other type is ones that allow third-party padlocks. These are more flexible as one can choose the kind of lock to use. 

All in all the the best locking mechanism is one that is hard to pry and also does not give the user a hard time when opening it.

4. Compatibility

Compatibility is one of the biggest things to check when buying a lock. Not all coupler locks can fit just any trailer. 

Before buying, you need to measures you trailer hitch to determine the right coupler lock to buy. 

The good thing nowadays is there are locks created with universal compatibility. They have recommended coupler compatibility range. Thereby, you can quickly pick one for your trailer range.

5. Weather Resistance

Trailers aren’t stored indoor; therefore, they have to deal with the harsh outdoor conditions.

Hence the lock that you buy should also be able to withstand the harsh outdoor weather without compromising the safety of your trailer.

Non-corroding and rust resistant materials are preferable for trailer locks. Even if they stay for long outdoors, the locks won’t decrease their performance.

Conclusion

There is no doubt that you need to keep your trailer secure when not in use as the chances are it is one of your most priced possession. And although there are different way of doing this most will always involve a trailer lock.

But, the good news is that finding the best trailer lock is super easy as you only need to watch out for things like the material, size and compatibility.

And in case you are wondering where to start your search we have you covered as our top 7 trailer lock reviews provide more than enough recommendations. Hence, all you need to do now is pick the model that suits your needs best from the 7.

Read More: 7 Best Wheel Locks - Reviews and Buying Guide



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