Xena XX6-Y Stainless Steel Motorcycle Disc Lock Alarm 6mm Push Down Locking Pin

High quality, heavy duty lock that works amazingly. I use this lock to deter the theft of my KTM RC390 while I am out and about. The lock is heavy and strong. There is no way anyone is cutting through this puppy without being noticed. The alarm on the thing is ear piercingly loud. I accidentally set it off in my house at around midnight the first night I got it haha. Talk about mad neighbors. Speaking of the alarm, it will go off when you take it off the bike... only for a moment though. Taking it off takes some getting used to, but after a few practice tries it is easy. Also, I was worried about strong winds setting it off, but that hasn't happened a single time The lock does not come with a reminder cable, but I don't see how anyone would forget that they locked their bike up. I usually store it underneath my seat. Occasionally, when I have not used it for a few months, I will hear it going off under there. The sensor will get dusty, and if you have it locked it will go off. A quick wipe does the trick to remedy this. Now, don't buy this product thinking that your bike will never get stolen. There is almost no sure fire way to keep a bike from being stolen. If a thief is good enough, wants it enough, and is prepared enough, your bike is a goner. That being said, this is a must if you want to deter 80% of would be thieves when you are in a rough part of town, or away from you bike a little longer than you feel comfortable with.

Easy to use and install and loud as anything! Will definitely draw attention.

I bought this for my 2013 Ninja 300 and it fits comfortably on both fron and rear brake discs. The yellow on the lock is very bright and easy to see so I don't worry too much about leaving it on by accident. The lock is very easy to operate; insert key and turn to the right to unlock (the locking cylinder will pop out), turn key to the left and remove the key, slide the lock onto the brake disc, and push the cylinder in until it clicks. The lock lets out a loud confirmation beep after you put it on. I tested out the siren just to see how loud it is, and even with my helmet on, its significantly loud. It sounds after about 10 seconds of moving the bike around and is fairly sensative to movement. The only thing that I didn't think about when buying this lock, was how I was going to carry it around. The lock is too big to fit the Ninja's storage compartment, so unless I'm carrying a backpack, it goes in my pocket. Just something to think about. Other than that, I definitely feel a little bit more secure having this little guy guard my Ninja. (Oh also fits easily on the CBR 600's brake rotors) I haven't had any experience with other locks and security measures, but I'm liking this so far.

First off, as a lock this thing seems quite sturdy, and I imagine when it's attached to the disc it will be effective. I have not managed to get in on the bike yet. I just purchased this, and have been trying to get it ready to put on the bike for about an hour at this point. If you buy this alarm DO NOT TRY TO PULL THE PLASTIC TAB to activate the battery. The tab is threaded deep into the alarm and will not come out without breaking the unbelievably flimsy tab that holds the alarm in place. After trying to remove the tab and having it break off halfway in the alarm, I removed the panel as per the not particularly good instructions and began attempting to remove the alarm. The tab holding it in seemed flimsy enough right off of the bat, so pulling it out by the tab seemed like a bad idea. After about 15 minuted I finally managed to shake the alarm out of the housing and get at the battery pack safely tucked away on the back. This feature I have no gripe with. When buying a disc alarm, the last thing you want is the thieves to be able to get at the battery with ease. I would prefer if it took a key to get into it, because the little tool they include seems fairly universal, and a determined thief could always acquire one and carry it with him. Here's the tricky part. Once the bit of ripped off plastic is out of the battery, YOU ONLY HAVE 40 SECONDS TO COMPLETELY ASSEMBLE THE LOCK. If you do not have the lock assembled in 40 seconds, the alarm goes off. I have been trying to get this thing back together for over an hour. The first time I finally got it together so that the alarm fit snugly and did not immediately fall back out, THE ALARM WOULD NOT DEACTIVATE. And in my haste to quell the auditory assault, I managed to snap off the aforementioned flimsy plastic tab. I'm going to try to see if I can get it to work without it, but I have my doubts. Thus I will be left either with an alarm that goes off constantly, or an expensive unalarmed disc lock that is both less secure and more fragile than one that would cost half the price. Maybe if you're a surgeon you could get it done, but with my ham hands 40 SEC IS NOT ENOUGH TIME TO ASSEMBLE. If you buy this lock, make sure to bring ear protection and find an isolated place to remove this thing from the packaging.

Outstanding for keeping your bike locked.

This is my second review of this product. It worked perfectly in the first 2-3 months. After that it started randomly alerting, even seconds after I armed it. I tried to clean it up but the plastic latch that holds the alarm into the lock broke. It was was too weak for real use. I sent 2 emails to Xena but they never get back to me. I assume - based on the other reviews here - they well aware of the problem but decided not to care about their customers. DO NOT BUY

No alarm is theft-PROOF. But this disc brake alarm will definitely discourage a would-be thief from taking your bike and just moving on to the next. The alarm is easy to use. Just slide it over your break and push the pin to lock it. The sensitivity of the alarm is appropriate. I do not want it to be SO sensitive that any little vibration sets it off. There is no way a person could try to move your bike without this alarm going off. The alarm is quite loud, but honestly could be louder. It's generally enough to attract attention.

I bought this alarm to fit on a Suzuki SV650 with stock brake rotors. While my bike is blue and a blue lock is available, I went with yellow so that it stands out from the bike. The lock fits well on the front rotor and sensitivity can be adjusted based on the position the alarm is placed. The alarm is sufficiently loud and gives plenty of warning before going off, giving you enough time to remove it before making a scene. Despite accidentally getting it wet, it still functions correctly, so I have some confidence it will work in wet weather as well. The alarm only blasts for 15 seconds so as not to drain the battery too quickly. It's pretty bulky and hefty so it feels quite durable. The alarm will go off before anyone will be able to remove it unless they manage to get the key. Despite this glowing review, it does have some flaws. The "armed" sensor is infrared and uses a mirror that can easily get mucked up. There's no way to just turn off the alarm for things like transport or battery replacement. The alarm will arm while unlocked if the IR sensor is obstructed. Perhaps not the fault of the alarm, but it is next to impossible to mount this thing anywhere for storage without it being loose or arming it. The last thing is I've not been able to find a mounting position so that it's sensitive enough to go off when someone sits on the bike. You are suppose to mount it towards the top of the rotor for maximum sensitivity, but I can get on the bike and pick it up without setting it off. I've had to bump the handlebar to set it off. It will definitely remind you that it's there before you can take off with it still on the rotor, but it will not stop people from jacking with your bike. I kinda see this as good and bad because at least it won't go off for random vibrations or noise. Overall, it's a good alarm. It will add to the protection of your bike from theft (don't get me wrong, I have no illusions of it preventing theft outright), it's easy to use, and it works fairly well. Additionally, if your insurance provider provides a discount for an alarm, this should satisfy the requirement to receive it. It does with Geico.