

๐ Lock it. Alarm it. Own the streets with confidence.
The YOHOOLYO Black Alarm Lock is a heavy-duty, metal disc brake lock designed for motorcycles and similar vehicles. Featuring a 7mm locking pin with 360-degree positioning, a loud 110 dB alarm triggered by a sensitive motion sensor, and robust waterproof and rust-resistant construction, it offers top-tier theft deterrence. Equipped with dual battery sets and a carry pouch, this lock combines durability, convenience, and high security for peace of mind on every ride.














| ASIN | B01M4MG0YT |
| Best Sellers Rank | #2,405 in Automotive ( See Top 100 in Automotive ) #1 in Powersports Alarms & Anti-Theft |
| Brand | YOHOOLYO |
| Customer Reviews | 4.5 4.5 out of 5 stars (10,647) |
| Date First Available | September 5, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 12.3 ounces |
| Item model number | LK603 |
| Manufacturer | YOHOOLYO |
| Manufacturer Part Number | 43249-125169 |
| Product Dimensions | 3 x 2.8 x 1 inches |
| Special Features | Work for Disc Brake vehicle only |
Y**B
Excelent product
Excellent lock, very secure and easy to use Review: This lock exceeded my expectations. It is sturdy, easy to install, and the alarm is very loud, which is perfect for deterring any theft attempts. The materials feel high-quality and the mechanism works smoothly. I've been using it daily and have had no issues so far. Great value for the price. Highly recommended for keeping your motorcycle safe!
A**N
Would buy again but donโt think Iโll have to for a long time!
Very loud, works great, easy to use, and very sensitive which I appreciate as people often try to take my motorcycle cover and this is sensitive enough that it goes off if youโre rough with the cover as I thread the reminder cable in it. Have had it for 6 months and dropped it a few times and it works great. Itโs also very discrete and looks well made.
L**H
Amazing quality, great for bike safety
Works exactly like intended, and I've already caught and stopped 2 people trying to run off with my new ebike
N**E
Great Value Disc Lock with Loud Alarm and Useful Reminder Cable
This is a great-priced disc lock for motorcycles or scooters. Itโs easy to use, locks securely, and comes with a loud 110 dB alarm that goes off if the bike is moved โ a great deterrent. The set also includes an extra battery and a bright reminder cable (like a plastic rope), so you donโt forget the lock is on your disc. The key is simple and works smoothly, though it might not be the most high-security key design. Itโs possible it could be easier to duplicate than more advanced locks, so I wouldnโt rely on it as your only layer of protection. That said, for the price, itโs an excellent secondary lock to have. Compact, waterproof, and comes with a carry pouch โ definitely worth it for peace of mind.
A**R
Works for what I need it for
Solid lock to keep the looky loos and honest people out. Doubt it will hold up to professional thieves, I use a couple of Kryptonite U-Locks through the wheels and brake/sprocket for overnight storage. But if you're looking for something to keep people from rolling away/stealing your bike while you're in a store or bar for a bit, this is a good option. The alarm is really loud and will activate if someone tried to tip or roll your bike. I like the bright chord because it draws attention to the fact that it's locked. It packs easily in my KLX300 Dualsport stock rear fender bag.
R**๏ธ
Donโt Leave Home Without It!
Awesome theft deterrent and a must have when traveling! The device itself is extremely well made and not easy to defeat, even with an angle grinder! It would take too much time, noise and effort to defeat this device, and itโs noisy as all get out once itโs activated!!! The alarm sensitivity is excellent and triggers the moment that my bike is disturbed in any way, and the loudness will attract attention from concerned citizens I hope!?! The device comes with an extra battery pack thatโs easy enough to swap out. I ordered extra batteries to keep the spare battery pack charged, loaded and ready to go. ***This device also comes with a lock reminder cord that should ALWAYS be attached when the lock is in use because I donโt want to pull off while the lock is attached to my brake rotor, that could lead to having a very bad day! I am definitely ordering a second unit as a spare or add on, and I highly recommend this device, especially when used in conjunction with other forms of theft deterrents! Unfortunately, thefts canโt be totally eliminated, but it can be slowed down, deterred or prevented effectively. Get It!!! ๐๏ธ ๐ ๐
R**.
GREAT $20 ANTI THEFT DETERRENT, amazing value!!
Loud enough. Very heavy duty. The whole package- the lock, orange steel braided cable, pouch, EXTRA SET OF BATTERIES, packaging and the simple instruction sheet = THE BEST DEAL AT ONLY $20 SHIPPED! I LOVE AMAZON PRIME! I just wish I would have bought into some Amazon stocks shares when Amazon first started up!
S**N
Simple and Effective
I've owned and used this lock for an entire riding season. Its batteries have lasted that long, and have shown no indication of running out. It's small but heavy, and my god is it sensitive. Maybe that's the only thing I dislike about it is how oversensitive it can be- if I know it'll rain, I'll make sure to put it on the back wheel instead of the front wheel, because if the rain hits it, it will go off. It's been very sturdy, and I find I don't use the cable it comes with. It's so sensitive that if you even start opening up the tail bag casually instead of carefully, it'll beep at you. I live in an area where there are people around all the time, so I use it as more of a 'pay attention to me, I'm getting stolen!!' alarm than an actual theft deterrent. When I sleep, I leave my window cracked open. If anyone touches the bike, even the neighbor's cat, it'll chirp and I'll know to listen to see if it goes into full scream-mode. The alarm itself is pretty loud and piercing. It does hurt my ears up close, and it's *very* noticeable even several hundred feet away. (Definitely wakes me up at night when it rains and I forget to move it to the sheltered brake rotor on the back wheel!) Pros: -small, easy to store -very durable -loud -battery lasts long -water and weather resistant/proof -direction of unlocking twist (clockwise) means that if you mount it right, it's easier to unlock without going off Cons: -Can be oversensitive -Goes off in the rain -lock mechanism is beginning to get a bit stiff after one year of weather-induced neglect Would I buy it again? Oh yeah, it's perfect for my use-case scenario.
T**A
el sonido dice 120 y viene siendo de 110 y el color no es como la foto
L**G
It costs a bit extra but itโs damn good.
L**E
Extremely loud! Reliable! I clipped it on my moped because theives stole it last time (thank God for built in GPS tracking I was able to get it back) and I feel more at ease ๐๐ผ Tested it out and man does it ever hurt your ears. Piercing sound. Should wake up the whole neighborhood. Will update how long the battery lasts. So far so good.
F**E
Velo electrique
ใ**ใ
ๅคๆฎตๅฎใใ ๅใไปใใ็ฐกๆใไฝฟใใใใใงใ
Trustpilot
1 month ago
2 weeks ago