bing tracking image
  1. Trailer Tongue Lock
  2. Trimax Locks
  3. Fits 1-7/8 Inch Ball
  4. Fits 2 Inch Ball
  5. Fits 2-5/16 Inch Ball
  6. Surround Lock
Trimax Dual Purpose Coupler Lock and U-Lock for 1-7/8", 2", and 2-5/16" Couplers
Trimax Locks

Trimax Dual Purpose Coupler Lock and U-Lock for 1-7/8", 2", and 2-5/16" Couplers

Part Number: TMX67FR
In Stock
$42.18
Trailer Tongue Lock
Add to cart
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Need help with installation?
Locate installers near me
Dual-ratchet locking system and hardened steel shackle provide 360 degrees of protection for your trailer coupler and peace of mind when you leave your trailer unattended. Also works as a general-purpose U-lock. Great Prices for the best trailer tongue lock from Trimax Locks. Trimax Dual Purpose Coupler Lock and U-Lock for 1-7/8", 2", and 2-5/16" Couplers part number TMX67FR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (58)
  • Q & A (0)
  • Photos

Trimax Locks Trailer Tongue Lock - TMX67FR

  • Fits 1-7/8 Inch Ball
  • Fits 2 Inch Ball
  • Fits 2-5/16 Inch Ball
  • Surround Lock
  • Trimax Locks
  • Keyed Unique
  • Steel
  • Universal Application Lock

Dual-ratchet locking system and hardened steel shackle provide 360 degrees of protection for your trailer coupler and peace of mind when you leave your trailer unattended. Also works as a general-purpose U-lock.


Features:

  • Locks down your trailer coupler to prevent towaway theft
    • Keeps others from hooking up to your trailer
    • Fits most ball-style couplers
  • Creates a tight, secure fit around coupler for 360 degrees of protection
    • Built-in ball fits inside coupler, engaging it like a trailer ball does to block the opening
    • Dual-ratchet system allows shackle to clamp around coupler evenly and guards against tampering
  • Doubles as a U-lock so you can secure equipment or lock down your motorcycle's rotor
  • Constructed of die-cast steel
  • Resists rust and corrosion with powder coat finish
  • Provides better security than locks with standard keys
    • Cylinder is harder to pick and resists drilling
    • Tube keys are more challenging to duplicate
  • Includes 2 keys
    • Keyhole cover keeps moisture and debris out of lock cylinder


Specs:

  • Application: 1-7/8", 2", and 2-5/16" ball couplers
  • Maximum coupler width: 4-1/2"
  • Shackle diameter: 9/16"
  • Limited lifetime warranty


Coupler width

Trailer Security Lock

You can lock your trailer coupler with a padlock, but it might not provide enough security to keep your trailer safe. A padlock can only be used to lock the coupler latch on your coupler, and to fit through the latch, the shackle on it has to be pretty thin. That means the shackle on a padlock is typically easy to cut.


The shackle on this wraparound lock is considerably thicker than a standard padlock shackle, making it harder to cut through. Also, because the shackle on this lock wraps around the head of your coupler instead of just fitting through the tiny latch, it just plain looks more secure.


The built-in ball on this lock engages in your coupler's ball socket, completely blocking the opening to prevent any tampering. The shackle fits over your coupler and ratchets down tightly and evenly. Because it ratchets on both sides, even if someone manages to slice through the shackle, it won't be enough to remove the lock. A (patient) thief would have to cut the thick shackle in multiple places to work it off of your coupler.


Simple Installation

To install this lock on your trailer:


Coupler lock installation

First, remove the shackle from the lock body and insert the built-in ball into your coupler's ball socket.


Coupler lock installation

Then, position the shackle over your coupler and line it up with the holes in the lock body. Push the shackle down, ratcheting it until it's snug around the coupler.


This lock can also be used as a general-purpose U-lock so you can lock down chains, secure doors, and more. To use this as a U-lock, just remove the ball plug plate and set it aside.



UMAX50D Trimax Locks Universal Die-Cast Patented Dual Locking Coupler Lock with 9/16" Steel Shackle





Customer Satisfaction Score:


Customer Reviews

Trimax Dual Purpose Coupler Lock and U-Lock for 1-7/8", 2", and 2-5/16" Couplers - TMX67FR

Average Customer Rating:  4.8 out of 5 stars   (58 Customer Reviews)

Dual-ratchet locking system and hardened steel shackle provide 360 degrees of protection for your trailer coupler and peace of mind when you leave your trailer unattended. Also works as a general-purpose U-lock.

by:

I’ve got these locks on all my trailers and only had 1 fail in the 15 years I’ve been using them.



by:

Fits very well and should add security



by:

Very good transaction. Needed a lock with a wider opening for the shackle than others.

Dale

11/9/2023

still in service



by:

Product was great but the order almost didn't make it to me in its entirety. They shipped everything including the two hitch couples (heavy objects) in a small wimpy cardboard box that was all broken up with a 2 inch hole by the time it got here. The packaging (plastic) of the lock was also broken inside and it was a miracle that the keys got stuck inside one of the couplers or else they would have fallen out of the hole in the cardboard box. The cap was also there but could have fallen out. Zero packaging like bubble wrap etc. Come on guys you are professionals, I know you can do better than that... Zero stars on packing the order... nobody wants to deal with broken or missing items, let's do better next time.



by:

This is my second Trimax trailer lock nothing wrong with first one but got two trailers now and not happy with the Reese lock not secure enough for me. The Trimax definitely a heavy duty quality lock.



by:

Simple to install. Liked the cover for the keyhole to keep weather and debris out. Great idea. Looking forward to years of service.



by:

Nice product



by:



by:



by:



by:



by:



by:



by:



by:

The overall quality seems excellent! The locks work smoothly and will be perfect for my Ranger trailer and Seadoo trailer. I was also surprised to see both locks were keyed the same. A big plus in this case.



by:

Fits well on my trailer tongue. Easy to lock and unlock.



by:

After one year outside in all weathers, the lock still looks and works great.



by:

Best coupler lock in this style. Great value.



by:

When not securing trailer tongue used to secure items in trailer.



by:

I like this coupler lock. I wanted something that would "hopefully" deter people from wanting to "borrow" my trailer. It fits nice and snug!



by:

USED IT TO REPLACE A REESE HD ONE THAT THE LOCK FAILED THE SECOND TIME USED



by:

Awful customer service. Took almost two months for my items to be delivered to my house. Will never buy anything from this website again.



by:

Turning the keys in the lock is a bit sticky right out-of-the-box. The black plastic casing feels very light-weight - will have to see if it can hold up to winters in the Northeast or if it'll crack.



by:

Looks nice



by:

I've researched many types of trailer coupler locks and I think I found this Trimax Dual Purpose Coupler Lock to be the best fit for my application. It is heavy duty and I like that the key lock is protected by a flip-back cover to protect the key insertion area from the elements. It is easy to use and I'm confident this lock will provide years of security for my trailer.


25
57
Show More Reviews

See what our Experts say about this Trimax Locks Trailer Tongue Lock

  • Coupler Locks For 2-5/16" Trailer Coupler With a 4-1/2" Wide Flat Lip
    We have a few options for your coupler with a 4-1/2" lip. The etrailer Trailer Coupler Lock # e98895 is a good lock. From there we move up to the better Trimax Dual Purpose Coupler Lock # TMX67FR which uses a hardened steel construction. The AMPLock Trailer Coupler Lock # AMP74FR is our best lock as it uses a cast iron construction and a rotating-disc-tumbler lock to prevent picking.
    view full answer...
    Image 1 for
  • Maximum Trailer Coupler Width For the Trimax Dual Purpose Coupler Locks
    The 1/2" Trimax Dual Purpose Coupler Lock # TMX77FR measures 4" across to the U-Shaped locking pin. We also have the 9/16" Trimax Dual Purpose Coupler Lock # TMX67FR and Trimax Dual Purpose Coupler Lock with Ballistic Grade Nylon Housing # TMX47FR that are both 4-1/2" across.
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Can the Trimax Dual Purpose Coupler Lock and U-Lock be Keyed Alike
    I do have an option for you but the Trimax Dual Purpose Coupler Lock and U-Lock part # TMX67FR isn't offered key alike. Therefore, if you order multiple they are likely to come with different keys. That said, we do have another very similar option for you in the Fastway Universal Trailer Coupler Lock part # FA86-0015-320 which does have a keyed alike option meaning you can order multiple and get the same key code. These are both universal surround style trailer coupler locks which fit 1-7/8",...
    view full answer...
  • Best Coupler Lock Solution for Shocker Hitch Air Cushioned Trailer Coupler
    Your Shocker Hitch Air Cushioned Trailer Coupler # SHK73RR uses an eZ-Latch coupler like what we see with the Demco # DM14040-81 so to secure this style of coupler I recommend using the etrailer Coupler Lock # e98888 when you have your trailer coupled to your tow vehicle, and then the Trimax Dual Purpose Coupler Lock and U-Lock # TMX67FR when your trailer is parked and unhitched. There are some more cost-effective solutions like the Curt Tri-Ball Trailer Coupler Lock # C48CR, but this...
    view full answer...
  • Does The Trimax Dual Purpose Coupler Lock # TMX67FR Lock Together When Not Attached to Coupler?
    If you are referring to the U-bolt portion and the locking portion of the Trimax Dual Purpose Coupler Lock # TMX67FR then yes these should lock together when not on a coupler. Do note the portion with the ball type head does not lock to the bottom portion of the lock so it can move as seen in the image below. You will need to ensure the key is turned fully into the locked position.
    view full answer...
  • Can Just The Ball Portion Of A Trimax Coupler Lock Be Replaced
    Hi Robert, The ball portion of a Trimax coupler lock isn't currently an available replacement part so you'd need to either reach out to Trimax directly or completely replace the lock with another like part # TMX67FR or # TMX47FR.
    view full answer...

Do you have a question about this Trailer Tongue Lock?


Info for this part was:

Employee Andrew K
Installed by:
Andrew K
Employee Andy C
Installed by:
Andy C
Employee Lindsey S
Edited by:
Lindsey S
Employee Chris R
Video Edited:
Chris R
Employee Jonathan Y
Video by:
Jonathan Y
Employee Sabrina W
Written by:
Sabrina W

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 1-800-940-8924