Best Trailer Ball Lock Products

The right trailer ball lock can spell the difference between a secure trailer and a potentially theft-prone one. If you are looking for the best and most effective trailer ball lock, you need to do thorough research to ensure that you get exactly what you are looking for.

Rank

Image

Product Name

​Our Verdict

 

1

Master Lock Trailer Lock Universal Trailer Coupler Lock 379ATPY best trailer ball lock

​Best Overall

2

RJ Lock Nut replacement Lock for Trailer Ball best trailer ball lock

Best For Hitched Trailers

3

Trimax UMAX100 Premium Universal Solid Hardened Steel Trailer Lock best trailer ball lock

Best in Durability

**Below, you'll see more detailed reviews, but you can also click the links above to see current prices and read customer's reviews on Amazon.

What is a trailer ball lock?

A trailer ball lock is a special kind of trailer lock designed to keep your trailer from getting stolen. It is a product that keeps your trailer hitch and receiver together as the lock prevents it from being lifted. Through this mechanism, thieves would not be able to unhitch the trailer unless the lock is opened.

It works differently from a trailer hitch lock, which prevents the hitch from getting connected to a towing vehicle.

A good trailer ball lock keeps your trailer safe, whether it’s hitched onto the vehicle or not. Without this, someone can easily drive to your trailer, hitch it, and speed away.

Reviews on the Top 3 Best Trailer Ball Lock Products

Rank

Image

Product Name

​Our Verdict

 

1

Master Lock Trailer Lock Universal Trailer Coupler Lock 379ATPY best trailer ball lock

​Best Overall

2

RJ Lock Nut replacement Lock for Trailer Ball best trailer ball lock

Best For Hitched Trailers

3

Trimax UMAX100 Premium Universal Solid Hardened Steel Trailer Lock best trailer ball lock

Best in Durability

**Below, you'll see more detailed reviews, but you can also click the links above to see current prices and read customer's reviews on Amazon.

Master Lock Trailer Lock, Universal Trailer Coupler Lock, 379ATPY – Best Overall

Master Lock Trailer Lock Universal Trailer Coupler Lock 379ATPY best trailer ball lock

This trailer lock from Master Lock is compatible with 1-7/8in (48mm), 2in (51mm) and most 2-5/16in (59mm) couplers.

It actually does not cost as much, which makes it even a good option to purchase. Not bad at all for securing a thousand-dollar vehicle!

On top of this, the product is made of high-quality materials that ensure that you are getting your money’s worth. For starters, the primary material is zinc alloy, which may not be the kind of material used by other coupler locks. Nevertheless, it could deter any thieves from stealing your vehicle.

Moreover, the device makes use of a unique key. In this manner, you don’t have to worry about it being opened by just any other coupler lock key. Aside from this, the advanced locking mechanism prevents it from being easily unlocked. 

Pros

  • Advanced locking mechanism resists picking and prying
  • Easy to install
  • Rekeyable cylinder for keyed alike convenience
  • Universal trailer coupler lock fits 1-7/8in (48mm), 2in (51mm) and most 2-5/16in (59mm) couplers
  • Reasonably priced

Cons

  • Might be a bit difficult to remove, even with the compatible key
  • Keyhole may build rust when left unused for weeks

Our Verdict

The Master Lock Universal Trailer Coupler Lock (379ATPY) was exactly how it was described by its manufacturer. One of the best features that we liked about this product, for instance, is its wide range of compatibility with different coupler sizes. In addition, iIts zinc alloy build initially made us question its toughness, but this trailer ball lock was tough to crack!

Best of all, its impressive array of features comes at one of the lowest prices in the market for any trailer ball lock. All in all, it was easy for us to dub this product the best overall trailer ball lock in the lot. In fact, this product also appears in our best trailer lock list, which you can read here.


RJ Lock - Nut replacement/Lock for Trailer Ball – Best for Hitched Trailers

RJ Lock Nut replacement Lock for Trailer Ball best trailer ball lock

Most trailer locks in the market secure the trailer when it’s detached from the carrying vehicle. On the other hand, if you prefer to keep the trailer hitch connected to the ball, then the RJ Lock is perfect for you.

This device has a unique technique to secure your trailer because it replaces the nut located under the hitch ball. As a result, it prevents anyone from unhitching your trailer to the vehicle, through its patented lock system.

The RJ Lock’s components are built with strength and corrosion protection in mind. For starters, much of its composition is anodized solid billet aluminum and dense plated steel, while its keyed lock (inside the housing) is brass and stainless steel. Because of this, this trailer lock has an extra ounce of protection against corrosion.

Pros

  • Unique lock system to keep the trailer connected to the vehicle
  • Easy installation
  • Corrosion resistant
  • Built from high-quality material

Cons

  • More expensive than other products of the same class
  • Not compatible with 0.75" or 1 1/4" shank diameter, as well as hitches with stabilizer bar receiver cups on either side of the ball shank

Our Verdict

One of the first things that you may notice with the RJ Lock is its high price, but how expensive is that compared to the value of your trailer? In other words, this lock is a worthwhile investment for people who desire security regardless of price.

What we liked best about this trailer ball lock is that you don’t need to detach the trailer from your vehicle. In short, you have one less step to securing your trailer. We realized that keeping the trailer connected to the carrier vehicle adds an extra level of difficulty for burglars, and the RJ Lock works best in that kind of scenario.


Trimax UMAX100 Premium Universal 'Solid Hardened Steel' Trailer Lock – Best in Durability

Trimax UMAX100 Premium Universal Solid Hardened Steel Trailer Lock best trailer ball lock

Trimax has been a trusted name in the trailer lock market in which they are known to produce great locking systems. For instance, the dual ratchet locking system feature of the Trimax UMAX100 Premium Universal Trailer Lock makes sure that your trailer is secure in case you left the main lock unattended.

The unique housing design of this Trimax trailer ball lock prevents foreign objects from entering and damaging lock. Looking at it closely, you will notice that the key lock components are all kept inside the steel casing. As a result, it's extremely difficult to pick.

Additionally, its solid hardened steel built gives it an extra layer of strength and protection against brute force.

Another feature of the Trimax UMAX100 is that it cannot be twisted in a certain degree to remove the lock from the receiver. As a result, this 360-degree protection assures you that there are no weak spots in this trailer ball lock.

Its one-size-fits-all design makes it compatible with a variety of hitches.

Pros

  • 360 degrees protection
  • Can be used on many types of hitches
  • Has a keyhole cover
  • High-quality locking system made of steel
  • Two ratchet locking system

Cons

  • The keys may be copied easily
  • The internal locking system may be hard to unlock, even with the key

Our Verdict

Visually, the Trimax UMAX100 Premium Universal Trailer Lock looks extremely tough and intimidating – and it really is. In terms of build, the solid hardened steel housing not only makes the entire product durable, but it also hides the lock components. Therefore, picking this trailer ball lock is very difficult.

The manufacturer offers a lifetime warranty on this product, which only goes to show how durable and secure this trailer ball lock is. Despite its secure features, the product is easy to install.

Final Thoughts

In conclusion, these trailer ball locks may offer the kind of security as they advertised. However, there is no assurance that your vehicle will not be stolen, particularly if you don’t make precautionary measures to safekeep your trailer. As always, we highly suggest installing a car alarm system or putting your unattended trailer in a safe location for additional safety measures.

Have you picked out the best and most appropriate trailer ball lock from our list above?

(Featured image source)

Chito Joseph