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Use this heavy-duty cast iron coupler lock to help prevent trailer towaway theft. Fits standard 2-5/16" ball couplers with flat lips. Resists picking, cutting, drilling, and freezing. Tumbler offers nearly 1 million possible key codes.
Features:
Specs:
Coupler Fits:
This lock fits 2-5/16" ball couplers with a flat lip. Examples of some of the couplers it fits are pictured below.
This coupler lock has a disc tumbler locking mechanism. Unlike locks that use vulnerable spring-loaded pins, this ultra-secure lock is bump-proof. The cylinder has a series of rotating discs that can be correctly lined up only when you turn the corresponding key. Two identical notched keys are included to operate the lock. Because these keys feature 1 of nearly a million possible key codes, it's extremely unlikely that another individual will have a key that can open this lock.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
What's up everybody, it's AJ with etrailer.com. Today we're gonna be checking out the AMP lock two and five sixteen ball flat lip coupler lock. So this is going to go right here on the coupler, on the front of your trailer. And it's going to keep anybody from pulling here and hooking it up to your trailer and taking it when you're not around. What sets apart this lock from other ones is some of the ones just have like a little tab that's going to cover up the coupler. And that can be pried out with a tool, or you can get around that.
This ball goes all the way up in here. It takes up all that space. So it's going to be hard to even get a tool in there and you're not going to be able to hook up anything else to it. So that's that extra protection and you have the cast iron part here. That's going to go over the lip of the trailer.
So you can see this groove here is exactly for that. And this is going to fit right there in the ball, put into place. You can just push the cylinder at the bottom and it's locked in. You're gonna get two keys with it. That way you can put one on the key ring, leave one in your truck just in case you lose it.
And you got a rotating disc tumbler lock here at the bottom. So that's going to be resistance to drilling or anybody trying to pick it, they're not going to get through to it. It's really easy. We just put the key in there turn and the cylinder will drop down. They know it's unlocked.
So right now it's unlocked so I can remove the key and then slide it off. Outside you have the cast iron portion that goes over the flat lip here on the coupler and that's going to be shock absorbent. So even if somebody was going to hit it with a hammer or something it's going to be able to absorb that punishment and not get destroyed. In addition to our coupler lock I would recommend getting a coupler latch lock. This is going to go right in here and lock this up. That way nobody can mess with this or this. We have them on our website. So just look for a coupler latch lock. The maximum width of the coupler with a flat lip is going to be four nine sixteen". Now the maximum thickness of that lip is going to be seven sixteenth of an inch. The other thing to point out is the ball itself is only going to fit two and five sixteen" couplers. Overall I think is going to be very useful to have just seeing this on the front of the trailer is going to keep people from messing with it. They're just going to see that and move on to the next one. If they want to mess with something but otherwise it will be locked up. You got all that protection there and nobody can hook up or even really pry out on it. So it's going to keep your trailer protected. I think that does it. Thanks for hanging out. I hope this helped..
Average Customer Rating: 4.8 out of 5 stars (95 Customer Reviews)
Use this heavy-duty cast iron coupler lock to help prevent trailer towaway theft. Fits standard 2-5/16" ball couplers with flat lips. Resists picking, cutting, drilling, and freezing. Tumbler offers nearly 1 million possible key codes.Good tight fit, tough construction, and a disk core. It has sat out in the elements it's whole life and the lock still spins like new. I did drop the ball portion with the key still in it and it bent the key. That's my fault though. I Like the lock.
Impressive lock. Well machined.
I was disappointed I couldn’t engage ball with the hitch ball clamp assembly after the flange lock was installed.
Jenny N.
6/7/2023
I am glad you like the lock and I wanted to ask you what you meant that you are not able to engage the ball?
Peter
6/7/2023
Thanks so much for this follow up communication. The locking lever on the ball receiver will not set into its locking position around the amp lock’s ball when the amp lock is in place. The locking lever on the receiver will set into locking position around the amp ball without the amp cast iron locking collar in place. Seems the center line location of the pin located in the amp cast iron collar is a bit to close to the amp lock’s ball location for both the amp lock assembly and the locking lever on the receiver to work together. However the amp lock assembly is substantial enough to work on its own. The amp lock engages the receiver’s flange and ball opening to substantially secure the towing assembly of the trailer.
Trailer still where I parked it. This lock is doing its job.
Dan
3/29/2024
Been almost 2 years with this trailer lock. Zero issues. Works flawlessly.
Easy to use. Heavy duty. Seems very sec ure.
Kenneth
4/3/2024
Lock works great. Most secure lock I have seen
This AMP Lock Trailer Coupler Lock might be expensive but you get what you pay for here I believe. I have purchased 3 of these based on what I believe to be a quality product.
Solid made, would be very very time consuming to overcome this lock , The lock cylinder is on the bottom, is harder to get to for locking and unlocking, That's ok is harder for thief to overcome it, This lock is well made and very heavy, Im glad to have this.
Heavy duty item! It is a little looser when installed than I thought it would be but I understand it fits many different hitch types. Even though it does fit a little loose in my opinion, in no way would anyone be able to get it off!
Fit perfectly. Everything I was hoping for.
Kenneth
7/30/2023
It has worked great. I feel very secure when I am gone from my travel trailer.
We love it, works great!
We chose AmpLock because after thorough research we found that this was the must trusted anti-theft device for our travel trailer. We often go out and leave our dogs in the trailer while camping and we didn't want to have to worry about something happening to them should the trailer get stolen. This gives us extra piece of mind. I hope that we don't ever have to find out how well it works, but for now we are very satisfied with our purchase. It did fit perfectly and was easy to install as well.
Tough Lock, Heavy Duty, Well Made, Rugged.
I do believe that this will send a potential trailer thief looking for another trailer.
Very robust and will not be easy to tamper with.
Heavy built unit. Weighs 10 lbs. It’s expensive but what price do you put on the value of your trailer? They shipped it to me in 4 days.
Strong and simple. It's what you need in a lock!
Timothy E.
7/12/2022
A year in...I still love it!
Dan
11/15/2023
Works great best lock Ive ever bought.
although the initial purchase is HIGH, IT IS CERTAINLY WELL BUILT TO PROTECT MY $6,000 investment, Great Quality 5 STAR
It is massive and will keep your rig sa fe.
This thing is built very strong.
The item fit as described and it got here quick. Thanks
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Steve
7/10/2024
This thing still works great. It has not missed a beat.