XENA XX15-SS Stainless Steel Disc Alarm

The XX-15 is a sturdy disk lock that I use on a HD FXDL. I mount it on the rear, utilizing the slots in the disk. The lock's post is too larg for the disk's round holes. I sought the most secure protection available. Also this model (and the XX-14 & XX-10) has an additional security feature that hold the bolt to the opposing side - it can't be pried out, as can less secure models.Tip: verify lock model to order on Xena site. Measure holes in your disks, and match to locks you consider.I'm very happy with this lock. I use the XX-14 on my RoadStar Warrior; and I'm very pleased with that lock.

It is a very solid piece. Everything works fine after the installation of the batteries, even if the alarm could be louder.This is where things could be improved.The device didn't worked exactly as described in the documentation.We have too few time to put the batteries, screw the sound module inside the iron block, and fix the back cover before the start of the alarm (it is written that we have a 40 seconds sequence (20 X 2 seconds low level bip !!!) after having put the batteries. In reality, we have much less time (less than 10 seconds (5 seconds ?)).The alarm could be a bit louder.

Highly recommend. Very happy with my purchase

Heavy duty construction, and difficult to circumvent. Hyper sensitive to movement is a plus and a negative when putting the device on your bike. Thieves will have to pick your bike up, because the heavy duty construction will secure you wheels from moving more than a couple of inches. I use it in concert with a Harley Davidson Alarm System II pager.Seems like the audible alarm can be disabled by liquids, and that would be the primary weakness of this device. For the price and as an adjunct to my Harley Davidson alarm system, which lacks sensitivity adjustment, it is a good device. The quality in the construction justifies the price imo!

I will say that this looks like a really well made disc lock. It is big, and looks sturdy and in turn is fairly heavy compared to many. Although I'm not too sure about the strength of the base as its pretty well milled out to get to the little trap door thing on the bottom (which I'll get to in a moment).The lock mechanism itself looks solid (double locking), and I'd have less doubts with this lock than others of one day not being able to unlock it (seems fairly common, reading the reviews).But that is where the good points end. The alarm is worthless. Seriously. The moment I took it from the packaging, the bottom lid/door just fell off and the alarm chirped and began the alarm cycle every 30 seconds or so. Real nice, as I haven't even been able to read the instructions as to how to disarm. (The door needs to be in place or it will continue to squeal, regardless of state of the lock).The latch that holds this little door in place would not stay latched until i fiddled with it using the metal "non" key thing they included. And even then it provided no confidence that it would stay in place. But, I figured I'd give it a go, and would overlook this if it did it's job when on the bike. As soon as i clamped the lock into place and locked it with a key, the alarm proceeded to go off.Done. Back in the package, and away it goes. I'll purchase a couple other disc locks without the gimmicky alarm for less money that is asked for this.

Not only does it act like a wheel 'boot', preventing someone from just rolling your bike away, it has a pretty good alarm that gets triggered when it senses a movement. The only criticism I have is the actual spring loaded key lock and the time to disarm the device.The actual lock on the device can be tricky to lock and unlock in time. It's spring loaded. The alarm counts down a few beeps before the alarm starts shrilling. It's easy to get in a panic if you're fidgeting with the key, and it's raining, or your lock is in an awkward place on your brake disc and there's a car next to you limiting your space to move, and your anxiety of the countdown beeps makes things worse. A couple of times the alarm went off while I was trying to simply unlock it. I understand that's what it's supposed to do, but then make the spring loaded lock easier to lock and unlock, or have a smart device that remotely disarms the lock so a person can remove it without the time stress.Secondarily, it's not that loud as I had thought it was going to be. I have a house alarm, and car alarm, and this device is much softer than those. My recommendation would be about 5 or 10 decibels louder.

Very loud and sensitive. just be sure to use a hole in the disc, so the sensor (which is near the lock pin) is covered by the disc and not over an empty space. In my CBR1000RR 2005, take a bit of effort to store it under the passenger seat, and is better to leave the lock unlocked there to avoid false activation while riding.

It was good while it lasted...this thing is big, bulky and LOUD but besides that the alarm itself is completely independent on lock status and the lock key does not disable it... meaning, if your alarm breaks, like mine did, the only way to disable is by taking the battery out, which is really hard if you don't have a small hex key.If the key disabled the alarm this would be a great lock but they put very cheap electronics on this, so my advice to you is to try something else. Two of my friends also bought a Xena lock and unfortunately they had the same issue... the alarm goes crazy and they ended up throwing it away like I will.Mine decided to go off in my backpack on my way to work... This is not the first time it happened and it started failing after a year to the point that is very unreliable and annoying.