The cost of a trailer hitch lock set is much less than the expense of replacing an entire trailer if it is stolen.
If you own a trailer, the first thing you should get is a good trailer hitch lock. Trailers, however, are frequently targeted by thieves since they are very easy to steal and sell once stolen.
Additionally, stolen trailers have a low recovery rate. Even if they are discovered, there’s a good probability that everything inside has been stolen. A trailer lock is a minor investment that might save you a lot of time and aggravation down the road.
After all, the cost of a trailer lock is cheaper than the cost of a complete trailer replacement.
There are various different types of trailer hitch locks on the market, and we’ll look at the most popular, bestselling, and cost-effective options in this post.
We’ll also go over why you need a trailer lock, what to look for when buying one, and how to pick the best one for your needs.
For more information on the best trailer hitch lock, refer to our table of contents.
What is a Hitch or Trailer Lock?
A hitch or trailer lock, as the name implies, is designed to prevent your trailer from being stolen. A hitch lock is a device that locks your trailer hitch and receiver together, preventing the receiver from being lifted.
This prevents a burglar from unhitching the trailer until the lock is turned off.
When your trailer is unhitched from your vehicle, a trailer lock, also known as a coupler lock, keeps it safe.
Someone might just drive up to your trailer, hook it, and drive away if you don’t have a coupler lock. These locks attach over the tongue’s coupler, stopping someone from hooking up their car and driving away.
In essence, a hitch or trailer lock acts as an insurance policy. A clever burglar may drive away with your trailer in minutes, if not seconds if you don’t have one of these locks.
Unfortunately, no lock can totally prevent a criminal from stealing your item if they want it badly enough and have the time to break the lock.
However, locks act as a deterrent, and some may make the burglar give up after a prolonged struggle.
How Do I Keep My Trailer from Being Stolen?
A trailer hitch lock is your first line of defense against a trailer being stolen while it is unattended. A burglar can actually back a truck up to it and drive away if there isn’t one, and this happens all the time.
It’s the kind of heinous crime that takes place in broad daylight. Adding even a simple hitch lock means someone will have to use tools and make a lot of noise to get to your trailer, which is usually enough to get people to move on to the next target.
However, even the invincible AMPLOCK or Proven hitch lock can’t overcome one major flaw: the coupler itself. The coupler that connects the trailer to the tow vehicle’s ball hitch is fastened on with a few bolts on many trailers, especially smaller ones.
It’s conceivable to unbolt the hitch ball coupler from the trailer straight tongue, bolt on a new one, and drive away, leaving your lovely lock coupler on the ground, because a replacement costs approximately $20. Tack welding your nuts on is one option.
That’s safe, but if you ever need to repair the coupler, you’ll have to grind off the welds.
Adding a trailer chock lock to one of the trailer wheels is a simpler solution. There’s a new layer of security that will require different tools to remove, which will take longer and produce more noise.
You could, of course, bring your own trailer wheels and tires with you. It’ll take a few minutes to jack it up, set it on blocks, and remove your wheels and tires, but stealing a trailer without tires is difficult.
It’s also a lot gentler on your tires if you’re storing it for a long time—they’ll be much less likely to be flat spotted or rotting.
What to Look for When Shopping for a Hitch or Trailer Lock
You should look for a product composed of high-quality steel, preferably hardened steel. Aluminum and other soft metals are lightweight, but they’re simple to damage, allowing a thief to easily smash your lock with a hammer.
The next consideration is whether the lock employs a unique key or if the key design is shared across multiple products.
Naturally, you’ll want a device with a single key, so you don’t have to worry about a thief gaining access to your lock.
Make sure you purchase in a lock that can resist tough weather conditions based on where you reside and your weather circumstances. Some goods will corrode and rust more quickly than others, causing the lock to jam.
If you reside in a region that gets snow or rain, read customer reviews because a rusty keyhole will bring you a lot of problems. At the very least, choose a product with a waterproof keyhole cap.
If you’re buying a trailer or coupler lock, check sure it’ll work for your needs. Despite the fact that many items claim to be universal, some may not operate with certain trailers or hitches.
Check user reviews or contact the manufacturer to confirm a particular product works with your specific application.
Top 10 Best Trailer Hitch Lock Set
1. AMPLOCK Trailer Coupler Lock (U-BRP2516)
This AMPLOCK coupler lock is designed to accommodate particular couplers with trailer balls measuring 2-15/16 inches. It’s made in Canada by a family-owned business that specializes in producing high-quality trailer locks that are customized to each trailer coupler.
This particular recommendation has a two-step locking mechanism that is patented. The cylinder lock’s location makes it tough for criminals to gain entry, and the swivel design prevents vehicle traction while it’s locked.
It’s a tough lock made of stainless steel and duct cast iron that can withstand torch cutting and liquid nitrogen. The coating of this lock, according to the manufacturer, is corrosion and rust-resistant in all conditions.
With a push-and-lock cylinder lock, it’s simple to use and allows you to swiftly lock up your hitch or trailer so you can get on your way. Most importantly, each consumer receives a unique key, ensuring that there are no duplicates floating about.
Remember that this lock is moulded to fit specific couplers, so if you have any issues about whether or not this hitch trailer lock will work for you, or if you ever need to use their five-year guarantee, contact AMPLOCK.
Pros – Swivel design, robust durable structure, custom fit for individual trailer couplers, extensive locking system, unique keys
Cons – The design isn’t universal, and the pricing isn’t cheap.
2. Trimax UMAX100 Premium Universal Solid Hardened Steel Trailer Lock
Trimax’s UMAX100 universal coupler lock is an even more powerful trailer lock. The UMAX100 trailer hitch lock, like the UMAX50, has a 9/16-inch shackle and 360 degrees of solid hardened steel, as well as a revolutionary dual function coupler lock.
The UMAX100 is a ballistic grade nylon housing that can resist hammer blows while also providing protection against harsh weather conditions. It is designed to suit most couplers from 1-7/8 to 2-5/16 inches.
A keyhole cover is included in the nylon casing to keep dirt and grime out. A type A key, which is a spring-loaded, seven-pin high-security key, is used in this coupler lock. This makes it more difficult for drill out attempts to succeed.
Trimax offers a lifetime warranty on all their products and is an Amazon’s Choice with over 2,000 very positive reviews
Pros – Hardened steel, dual-function coupler lock, ballistic grade nylon housing with keyhold cover, type A key, heavy-duty coupler
Cons – Keys aren’t all the same, and there have been some quality control difficulties identified.
3. Master Lock Receiver Lock (2866DATSC)
This Master Lock receiver lock fits 1/2-inch and 5/8-inch receivers and is designed for automobiles, trailers, and RV hitch locks. The 1/2-inch pin is rated for a 3,500-pound weight in Class I/II, while the 5/8-inch pin is rated for a 10,000-pound load in Class III/IV. The receiver pin’s usable length is 2.75 inches.
The receiver lock has a simple push-to-lock mechanism that allows you to remove the key by simply pushing the lock body into the pin. It boasts a long-lasting design with a weather-resistant seal and a waterproof top that keeps moisture and debris out.
The four-pin cylinder resists lock picking, and the keyway is made of brass, making it corrosion resistant.
A unique stainless steel swivel head that spins 360 degrees for easy access is also included. This is a padlock-style hitch lock that prevents theft by replacing the normal pin and clip. It includes 1/2-inch and 5/8-inch pins, as well as two keys and a locking swivel head.
Pros – Supports Class I-IV hitches, includes 1/2- and 5/8-inch pins, push-to-lock mechanism, weather seal and watertight cover, four-pin cylinder, swivel head, lifetime guarantee
Cons – Corrosion, easily bent, or damaged keys have been reported by users.
4. Trimax Premium Key Receiver Lock (T-3BLACK)
Trimax’s premium key receiver lock is made of high-quality, forged hardened steel. This product has a tough black epoxy powdercoat and an O-ring seal as well as a watertight cover to keep dirt and rust out.
According to Trimax, the lock cannot “pop” open or be falsely locked. It’s simple to use, with only a quarter turn required to lock and unlock the head.
The 5/8-inch pin is compatible with all Class III, IV, and V receiver hitches, with a span of up to 2.75 inches.
This is a type A key, which means it’s a seven-pin, spring-loaded high-security key. It will not bend or break even if you try to drill it out. The dimensions of the trailer hitch lock are 1.2 x 5.8 x 8.8 inches.
Pros – Watertight cap, cast hardened steel, fits Class III-V receiver hitches, type A key
Cons – The rubber cover is thin and easily comes off, and some users have complained about corrosion.
5. Reese Towpower Universal Coupler Lock (72783)
Reese Towpower’s premium lock is a universal coupler lock that measures 9 x 9 x 3 inches. It has an aluminum body and a heavy-duty steel lock bar, and it’s designed to be universal, with 11 locking settings and a ratchet design.
It works with couplers that are 1-7/8-, 2-, and 2-5/16-inch in diameter. The superior lock resists picking, prying, and drill-outs, and the sturdy bright yellow finish functions as a theft deterrent.
If you’re unfamiliar with the Reese brand, it was created in 1952 and is a well-known name in the heavy-duty towing sector, as well as a global leader in automotive and recreational product solutions.
Reese’s Towpower hitch lock is a good way to guard against trailer tow-away theft.
Pros – Universal fit, heavy strength steel lock bar with a brilliant yellow finish
Cons – Users say that the keys are easily broken because the body is made of aluminum rather than full hardened steel.
6. Cocoweb C-Lock Heavy Duty Locking Hitch Pin
The C-Lock heavy-duty hitch pin lock from Cocoweb is available in 1/2- and 5/8-inch sizes. The 1/2-inch and 5/8-inch pins come in silver, with the 5/8-inch pin having a black finish.
The typical design of this locking hitch pin includes a weatherproof cap that protects the keyhole by keeping out water and filth while also keeping the lock-free of rust. This locking hitch pin requires no drilling or mounting; simply slide it in, lock it, and you’re ready to go.
The pin is compatible with Class I, II, III, and IV hitches with a maximum outer width of 2.75 inches and includes two laser-cut keys. Because these locking pins do not fit all vehicle models, Cocoweb advises double-checking the specifications of your hitch.
The sturdy steel lock is six inches in length and features a barbell locking mechanism that ensures the lock fits tightly and securely. The hitch pin lock from Cocoweb comes with a one-year warranty.
Pros – Weatherproof cap, 1/2- and 5/8-inch pins, supports Class I-IV hitches, barbell locking mechanism
Cons – Users have reported rust difficulties, and the hitch does not fit factory Toyota hitches.
7. Trimax UMAX50 Premium Die-Cast Dual Purpose Coupler Lock
Trimax offers a quality die-cast coupler lock with a dual ratchet lock system that is “one size fits all.” With a rust-proof hammer tone epoxy finish, the distinctive design gives 360 degrees of hardened steel protection.
The UMAX50 has a keyhole cover that slides up to keep dirt and grime out and may be used with 1-7/8-, 2-, and 2-5/15-inch couplers.
The UMAX50 trailer lock from Trimax has a Type A seven-pin spring-loaded high-security key that resists drill-out attempts.
Trimax also took further precautions and created a key that will not bend or break, according to the company. The shackle is made of 16mm hardened steel and features six big ratchet teeth that will not pull out.
This product is pricier than some of its competitors, but it comes with a lifetime warranty.
Pros – Lifetime warranty, hardened steel protection, hammer tone epoxy finish, universal coupler design, keyhole cover
Cons – Rust, stuck keys, and seized locks have all been reported.
8. Master Lock Trailer Lock
This Master Lock trailer lock fits most trailer couplers with a diameter of 1 7/8 inch to 2 5/16 inches. It comes with a limited lifetime warranty and has a superior corrosion-resistant zinc mechanism and two keys that give resistance to picking and prying.
This item is “keyed alike,” which implies it has the same key as the others. So, if a thief has the key, there’s a significant possibility they’ll be able to quickly open this trailer lock.
The advantage of “keyed similar” products is that a single key will open all of your Master Lock locks, but it’s an odd price to pay for simplicity.
This trailer lock is a sturdy, heavy-duty item that is well-made and long-lasting. It’s one of the most difficult locks to pick as long as a potential burglar doesn’t have access to a key.
Pros – Construction is solid, and the warranty is set to a lifetime.
Cons – Some products have a loose fit since the keys are all the same.
9. Proven Industries Trailer Hitch Lock
Not everyone is a fan of Proven’s locks. The #2516 is a 10-pound slab of solid steel that measures 8.15 x 7.76 x 7.6 inches and is created in the United States by a family-run business.
They have a variety of versions available in 2- and 2-1/2-inch hitch diameters, as well as custom locks for Jayco trailers and Titan hitches.
As some of the highest-rated trailer hitch locks on the market, Proven provides both cut and picking protection, as well as securing your safety chains, which are lacking in less-priced models.
However, the adjective “expensive” is key, as Proven trailer locks are in the same price range as the Amplock. If you’re leaving an expensive trailer with precious goods somewhere, though, it’s a good idea to spend a bit more money to protect it.
Pros – Several size choices, customizability, and excellent protection
Cons – Large, hefty, and costly
10. Tow Ready GorillaGuard Coupler Lock
As some of the highest-rated trailer hitch locks on the market, Proven provides both cut and picking protection, as well as securing your safety chains, which are lacking in less-priced models.
However, the adjective “expensive” is key, as Proven trailer locks are in the same price range as the Amplock. If you’re leaving an expensive trailer with precious goods somewhere, though, it’s a good idea to spend a bit more money to protect it.
This is a surround lock with a unique key, so you don’t have to worry about a thief having the same key as you. It’s designed to keep unattended trailers safe, but it’s also towable and simple to install.
Two keys are included with the Tow Ready GorillaGuard, as well as a one-year limited warranty.
Pros – Uniquely tagged price
Cons – Fitments are limited, and the warranty is only for one year.
FAQ’s About Trailer Hitch Lock Set
Are trailer hitch locks effective?
Trailer locks are a simple, low-cost solution to keep intruders out and ensure that your trailer stays yours. NOTE: Keep in mind that no lock is completely secure. Trailer tongue locks are intended to act as a deterrent to would-be thieves by making it difficult for them to readily steal your trailer.
Are hitch locks safe?
Yes, you can use the lock instead of a hitch pin, and it will work perfectly to transfer the trailer and boat safely. Although the hitch lock does not have an official rating, its capacity is far more than that of the tow vehicle or trailer hitch.
What do thieves do with stolen trailers?
Most thieves steal these products because they are difficult to trace and may be easily converted to cash. Thieves can sell your trailer (or what used to be your trailer) in places where a title isn’t required at the time of sale, and they can sell your trailer’s tools at a pawn shop in another city.
What size hitch lock do I need?
If you have a class I or class II receiver, you’ll need a 1-1/4 inch receiver lock, and if you have a class III or bigger receiver, you’ll need a 2 inch receiver lock. Make sure the receiver lock’s inside width is at least as wide as the total width measurement of the hitch at the hitch pin hole.
Do trailer hitch pins break?
The hitch pin can bend or shatter under considerable pressure. In most cases, shear strength is expressed in pounds per square inch. Hitch pins, like bolts, are graded.
