

๐ Lock it. Alarm it. Own the streets with confidence.
The YOHOOLYO Black Alarm Lock is a heavy-duty, metal disc brake lock featuring a 7mm locking pin and a powerful 110 dB alarm to deter theft. Designed for motorcycles, scooters, and bicycles, it offers 360-degree locking flexibility, weatherproof durability, and a dual battery system with 12 batteries total for extended protection. Compact and easy to use, itโs a top-rated security solution trusted by thousands.














| ASIN | B01M4MG0YT |
| Best Sellers Rank | #2,155 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 (10,654) |
| 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.
J**K
Very good product
It works great.
J**N
Works for my 2003 CBR600RR, but it did not fit the front tire on my 2023 Ninja 400.
Works for my 2003 CBR600RR, but it did not fit the front tire on my 2023 Ninja 400. Make sure that you check the pinhole size of the rotors that you have before you buy. For my 2023 Ninja 400, I had to get a smaller 5mm lock for the front. This 7mm one would only fit the back wheel on my Ninja. This can fit on both wheels of my CBR however. Alarm is loud and not overly sensitive, which is good. However, if its already agitated then it will get more sensitive and then make the alarm sound, which is quite loud, louder than the video depicts. Overall good, but I haven't tested the lock strength yet and I don't plan to. Don't rely on this to fully protect your bike though. If a thief really wants your bike, they can still lift it. This just prevents them from rolling it away. I still think that a solid hit with a sledgehammer could still break this lock.
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!
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
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