Best lock out there for my mountain bike when i go to the gym or travel to work on it i no longer worry about it being stolen ultimate peace of mind i bought 2 and left them at each location when people notice it there impressed I'm always looking for the greatest sadly can't use this on my dualtron storm limited escooter i look forward to more innovative products maybe a disc lock alarm d lock defenitly somthing for escooters thanks for this absolute beast of a lock.

Rig feeling safe and secure

Can leave Bike,and know its still there when you come back.
I carry mine by securing around seat post whilst cycling.

Feels very secure, which is all I asked for, the size of it is a little limiting (In terms of places you can lock it), but when I called and asked if I could return had it not fit, they said 'Of Course'. Luckily it did end up fitting. I can see a few File marks where people have tried having a little go at the lock, but it holds strong! No serious attacks and hopefully the lock will never have to fend one off, but I'd still feel confident.

I'd Highly recommend.

After watching the youtube videos and reading the reviews, buying this lock was the piece of mine I needed with the recent thefts in the area. My friend had his brand new trailer stolen a couple of days ago and the police just recovered it. He will be buying this lock to prevent future theft.

Fantastic is all I can say about this lock, exceeds my expectations! I will recommend this to all my buddies!

If someone can break into this lock without breaking the trailer tongue off then maybe they deserve to have the trailer...

If they want your bike badly enough with this bad boy on it, then you need to stop riding around on a gold plated bicycle like an African Warlord. Seriously, when they have to consider the benefits of cutting the rack, they're going to move on 99/100 times at least.

Beefy as hell, you will probably want to leave it where you park most often, because good luck finding a clamp to hold it to your frame. Watch security guards marvel at the size and girth of your mighty D...lock on the rack.

I've heard stories of people engaging in self defence with their D-locks, and all I can say is that if you hit someone with this, you're going to be tried at the Hague for genocide.

Buy this lock if you want to anchor your bike to the Ni-Fe core of the Earth itself.

Love it. Was able to adjust to fit vintage airstream tongue by trimming the topside leading corners off at a 45.

Huge fan, I've been showing all my friends this up-armored RV Lock! Keep disrupting the lock industry!

The strongest lock in the world, without a doubt. Thieves will move on to easier targets when they see this monster!! Very well made with good coating protection to avoid bike damage. Obviously the weight is unavoidable if you want the strongest lock in the world, but there are two relatively minor problems that could be easily be resolved. The lock is a bit awkward to use. Not a very positive key insertion, so a bit fiddly. And for ebikes with larger frames, the lock is just a bit too small. Obviously an increase in size means an increase in weight, but it would be worth it to to suit ebikes which need more protection due to their higher cost. But, still the best lock for peace of mind.

I bought a 2-pack of Altor Ti locks about 5 years ago, and I went through several bike-frame lock holders that had a weak point where you attach the strap, and they kept breaking. After replacing them a few time I stopped, and went 3 years using those 12" long reusable rubber twisty ties to strap my lock to the bike. I went back to the website recently to find them redesigned with the weak point eliminated, and bought two. Arrived fast, and there is NO WAY these will break now. Very happy!

Works as advertised! Feel that my race trailer and equipment are protected.

SAF 2516 TRAILER LOCK

I've been towing trailers around for over 50 years and have purchased almost all of the coupler lock designs that have been made. All were trash that could be defeated in 2 minutes with a grinder or picked even faster. I never understood why someone didn't didn't fulfill the need for a proper trailer lock. Then Altor came out with this. Now this is a proper lock to protect my very expensive boat. They seem expensive but are actually less than half a percent of the value of my boat. I am no longer the low hanging fruit when the trailer thieves come calling. Altor is going to sell a bunch of these locks.