RETRUE universal trailer coupler lock adjustable heavy duty hitch lock with keys for rv boat and utility trailers
RETRUE heavy duty trailer coupler lock aluminum body steel u lock construction anti theft design
RETRUE adjustable trailer coupler lock dimensions fits 1-7-8 inch 2 inch and 2-5-16 inch couplers
RETRUE trailer coupler lock used for rv trailer boat trailer and utility trailer security
RETRUE heavy duty coupler lock comparison wider steel u pipe stronger than standard trailer locks
RETRUE Universal Trailer Coupler Lock Adjustable – Heavy Duty Trailer Hitch Lock for 1 - 7/8", 2", 2 - 5/16" Couplers, Anti - Theft Aluminum Body & Steel U - Lock for RV Boat Utility Trailers - RETRUE
RETRUE black adjustable trailer coupler lock with keys weatherproof hitch security lock
RETRUE chrome steel trailer coupler lock anti theft hitch lock with rubber dust cap
RETRUE red trailer coupler lock adjustable hitch lock for rv trailer boat trailer
RETRUE blue trailer coupler lock universal anti theft towing lock with steel u bolt

RETRUE Adjustable Trailer Coupler Lock – Heavy Duty Anti-Theft Lock for RV & Boat Trailers

Secure your trailer with the RETRUE trailer coupler lock, designed for reliable anti-theft protection. This adjustable coupler lock pin fits various trailer setups while helping prevent unauthorized towing. It also works as a durable trailer hitch lock, providing dependable security for parking, storage, and everyday towing applications.

$34.99 USD
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DESCRIPTION

Adjustable Universal Fit:
This adjustable trailer coupler lock fits multiple coupler sizes for RV trailers, utility trailers, camper trailers, cargo trailers, and equipment trailers. It works as a versatile universal trailer lock for different towing setups and everyday security needs.

Reliable Anti-Theft Security:
The reinforced design blocks the coupler opening and helps prevent unauthorized connections to a hitch ball. This durable anti theft trailer lock provides dependable protection for outdoor storage, travel stops, and daily parking.

RV & Boat Trailer Storage:
Designed for marinas, campsites, driveways, storage yards, and jobsites, this trailer hitch lock adds visible protection against unwanted towing. It also functions as a compact boat trailer lock and RV trailer lock for recreational use.

Durable Coupler Protection:
Built for long-term outdoor exposure, this heavy duty trailer lock resists weather, tampering, and daily wear. It also supports trailer tongue lock, tow hitch lock, and cargo trailer lock applications for reliable trailer security.

Fitment Guide

Coupler Compatibility
Fits 1-7/8" trailer couplers
Fits 2" trailer couplers
Fits 2-5/16" trailer couplers
Not compatible with:
Gooseneck couplers
Fifth-wheel couplers
Specialty oversized coupler systems

Locking Adjustment Range
11 locking positions
Adjustable U-bar spacing
Designed to minimize coupler movement
Always verify coupler size before purchase



SHIPPING & RETURNS

Shipping:
We ship our products primarily through USPS/UPS. All items will be shipped within 72 business hours upon receipt of payment (except Saturday and Sunday). Orders placed on weekend will be shipped within 4 days.

Returns:
Items purchased from RETRUE may be returned in original unused condition within 30 days from the date of purchase for a refund, to the original form of payment. All returns must be pre-approved by RETRUE. Otherwise, unauthorized returns will not be accepted.

Technical Specifications

Product Type: Trailer Coupler Lock

Compatibility
·1-7/8 inch couplers
·2 inch couplers
·2-5/16 inch couplers

Locking Positions: 11 adjustable locking positions

Material
·Aluminum lock body
·High-strength A36 steel U-lock

Security Features
·Anti-theft design
·Cut-resistant structure
·Tamper-resistant lock cylinder

Weather Protection
·Rustproof coating
·Weatherproof rubber keyhole cap

Applications
·RV trailers
·Boat trailers
·Utility trailers
·Travel trailers
·Cargo trailers
·Livestock trailers

Package Includes
·1 × Trailer Coupler Lock
·2 × Keys

Warranty: 120-day product warranty

Frequently Bought Together

Total price: $44.98
detailed
RETRUE trailer hitch and coupler locks for towing security, including ball mount lock, hitch pin lock and trailer coupler locks.

Customers praise this heavy-duty trailer coupler lock for its solid construction and ease of use. Reviews highlight it's "very easy to put on and take off" and "too big for bolt cutters." Shoppers appreciate the peace of mind for securing RVs, boats, and cargo trailers. One concern: chrome coating may rust after a year.

  • Like it a lot, very easy to put on and heavy duty
  • Work great! Too big for bolt cutters to cut through.
  • Hefty lock, easy on easy off highly recommend this product!
Price (positive)Fit (positive)Lock (positive)Quality (positive)Trailer (positive)
  • 5 stars: 28 (97%)
  • 4 stars: 1 (3%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
D
Dennah M.
Would buy again

Like it a lot , very easy to put on and heavy duty

K
Kegger
Does what it says it will

Works as described

p
pellet h.6.
Works very well

Just what I wanted.

s
stevenpike
Secure , peace of mind

Hefty lock, easy on easy off highly recommend this product!

R
Robert S.
Just what I needed to secure my trailer

Worked great on travel trailer

L
Loreen B.
It's the little things that matter.

Finally! I didn't realize that trailer hitch locks were vastly different for different types of hitches. This is my third one purchased, each being different in style. I have a bull-nose hitch, and not only did it fit wonderfully, but the keys has the name of the lock embossed on them, so I won't have to try to either mark them myself or remember what/where the keys fit. For that alone, I would have given it a 10 out of 10, if the scale went up to 10.

p
pdalmolin
Works Great!

work great! Too big for bolt cutters to cut through.

H
Herb G.
Hitch lock

Fits perfectly, delivered faster than expected, hopefully never gets tested by a thief.

B
Becki M.
Love it

Works great.

M
Mike
Hitch Lock

Works just it said it would

Q
Quick S.
Heavy Duty

Purchased this for my first little travel trailer and with this I now have some peace in mind that my trailer is staying on my property. Looks to be made very well made and easy to put/take off. Highly recommend.

D
Donna D.
Heavy Build

Quality and well built; worked perfect for our log splitter.

T
Terry P.
Great deterrent

Heavy duty!

S
Scott
Fits as desired

Easy install. Great price. Its a deterrent and thats what I needed.

J
Joanne
Great trailer lock!

Solid piece. Well made. Glad I bought this one!

N
Norman J.B.J.
Great product

It is as advertised. Works well and easy to use.

j
johntheofanopoulos
ok

good

K
Kristi R.
works good

works good and easy to use

P
Penny V.
Keeps our RV protected

Works perfect

A
Amazon C.
Solid choice

This is the second one I've purchased. One for my camper one for my cargo trailer. Very sturdy, love that they added different colors now. A little thicker coat of chrome on the u part would be the only thing id change. My first one is starting to rust after only a year. Other than that solid choice

A
Ana R.
Bueno

Buen producto

B
Bennie s.
Good

Great price

J
Jason K.A.
Heavy duty

It was good

J
Jerry J.
Very solid

Very solid heavy duty. Red color is nice.

M
M
Duh, check function of any purchases

Worked perfectly as soon as I opened the perfect box it came in with no damage. The beefy still is definitely a plus. I bought a $20 quick lock at a store here in these parts called Bi-Mart. It was puny compared to this. I had the red bar and gray base. First thing I did was check the lock and key functioning. Smooth as a bottom dollar. Looks great works great. Unless you are going hardcore all locks are just to keep honest people honest. I would suggest if you're serious about stopping or making it harder for your rig to stay yours is wrap some New York bicycle antique theft chain through your leaf springs through the tires rims with an American Lock on the inside of everything so it's hard to access with a cutter. Because you're not going to use bolt cutters on those chains. They are specifically shaped so that bolt cutters cannot cut through them and they have a sleeve made of cloth that definitely stops bolt cutters either way that's not going to work. They'll have to start carrying apart leaf springs axles and the tire with the rims etc. You got to make it harder than the next guy. I doubt your rig will be worth the time because it's easier to take the next guys. And don't show your neighbors what you have or how you do it to keep it safe. Use cameras, it's 2025. The more you put on remote solar lights and everything else you can do if you really look into it. This applies to all personal property. Either make it hard enough to they go to the next Target or if they take it it's destroyed and it's useless to them. Always watch your surroundings and actually look around yourself because you have to be the watcher because no one else is going to be watching out for you. And if they do you never know who they know and what information they have for the people wanting your property. People use anti-theft bars on their steering wheel. You can bend the steering wheel or cut right through it removing that and teeth theft bar. Here on Amazon you can buy a $20 pedal lock stainless steel and they're not going to take the time to cut through that. I put three of those on my rig. Along with a lot of other things. All rigs are easy to steal. The be creative watch YouTube and see how they break stuff and think outside the box. Look up New York Kryptonite KryptoLok Series chains and locks. Research d style locks. Put a couple of these heavy duty chains and locks through your tires leaf springs axles etc. Good luck on stealing that without being seen or heard. Or moving it while we're moving the tires and cutting through chains that are definitely going to attract attention. But this lock was awesome I like it super bulky not weak looking. You have to send a message by the things you put on your rigs and property. You're not going to get this easy and it's going to cause you time and you're probably going to get noticed and caught. Because you can't count on the police to protect your property or find it. Put some air trackers on it. Basically invest as much as you want to if it means that much to you. I can't see anybody taking off for those chains and locks on every tire wrapped around every axle I leave spring. And that's just for starters. Solo-powered lights work great because they have the capability of weather resistance functionality and battery charge. Cameras are easy to use. Duh, always test out anything you buy immediately or before you purchase if possible. That is the owner and purchaser problem if they don't. Those are the people that are the ones that will be the target instead of you. Because it's easier to steal from someone who doesn't know what the heck they're doing. It's 2025 wake up

B
Brad
Heavy duty

Great

D
Debbie
Worked great.

Worked great.

A
Amazon C.
Protect your investment

No matter what type of trailer you own, your investment is at risk of being stolen. By installing Retrue hitch lock on your trailer, your less likely to experience this type of loss. The lock is easily installed, but extremely hard to remove without a key. To me, the cost of the lock is insignificant when compared to the value of my trailer and cargo.

j
jay
Works great

Put it on the trailer took the truck to dinner stayed in hotel overnight not worried about the parking lot