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🔐 Lock it loud, lock it proud — your ride’s new best bodyguard!
This Motorcycle Alarm Disc Brake Lock combines a powerful 110dB alarm with shock sensors and waterproof aluminum alloy construction to deliver robust, weather-resistant anti-theft protection. Compatible with most motorcycles and bikes featuring disc brakes up to 7mm thick, it offers easy one-button locking, a 5ft reminder cable to prevent accidental rides with the lock engaged, and comes complete with keys, a hex wrench, and a carry pouch. Ideal for urban riders seeking peace of mind and a visible theft deterrent.











| ASIN | B08W1H4QXL |
| Audible Noise | 110 db |
| Best Sellers Rank | #4,271 in Automotive ( See Top 100 in Automotive ) #2 in Powersports Alarms & Anti-Theft |
| Brand | Mathtoxyz |
| Compatible Devices | Motorcycles |
| Customer Reviews | 4.6 out of 5 stars 3,553 Reviews |
| Manufacturer | Mathtoxyz |
| Maximum Range | 15 meters |
| Mfr Part Number | MA-CS-B |
| Model Number | MA-CS-B |
| Noise Level | 110 db |
| UPC | 887511762463 |
| Unit Count | 1 Count |
M**K
Such a sneaky and effective little lock - I love it! Red, so u can see it!
What a great theft deterrent device for under $20! AND it has an alarm that is LOUD! It may not be rechargeable, but you CAN replace the battery. This is why it came with that little Allen wrench! I was wondering.........had to come back to the product page and try to figure it out. My LECTRIC E-Bike now has FOUR locks! Where I live, there are NO bike racks to lock to. So I got a U-lock, a cable that goes with it, and the folding lock that came with the bike. Now, I have this fourth lock, a type of lock I never even knew existed until I went looking, and I feel a lot more confident now about leaving my $$$$$ bike outside the store. That monster is HEAVY! It's like a freakin' motorcycle! And now, I feel a lot safer, and freer! Lock is very easy to use; remove the little white rubbery cushion, throw it out. Remove the Allen wrench, it was stuck into the cushion. ;-) Keep it. Simply insert key to unlock and when you see it is unlocked, clip it onto your disc brake, and push the same silver button (where the key fits) down; it IS the locking part. You'll heart it beep twice. Any movement after that, and it's going to set that loud alarm off! To stop the alarm, you have to use the key to unlock it, or wait it out 30 LONG ear blasting seconds! I love that I got the red one, so it can be seen, a visual deterrent! It functions so easily, I love this style of lock! It comes in other colors too, yellow, for instance, highly visible, and says to a bike thief, "BACK OFF!" Its appearance is as you'd expect; Fits into the palm of your hand, or into the little velcro pouch it came with. I cinched mine up near the handlebars. Also, it comes with a long cord, so you can attach one end to the lock and the other end to your handlebar, so you don't forget to unlock it,, and try to drive off, and wreck your wheels. Be safe, wear a helmet!
P**S
It cheap and it works! What more do you need to know?
A group of cockroaches tried to steal my bike and because of this cheap $20 thingy it was left. They actually broke the ignition cylinder and turned on the bike. As you can see in the pictures they hammered away and couldn’t get it off. This strong sensitive alarm is worth more than this. Comes with a storage pouch that can be used while mobile, It’s easy to install, and secured my boobie! It has a loud and super sensitive alarm (which can be annoying on rainy and or windy days). It worked for me. Definitely getting another. Thank you!!!!
J**A
Durability and Safety
It work great, It is Durability, great Sensitivity,Material good
S**S
Works well, but only on thinner discs
Nice product, work well on my dual sport and dirt bike, but it won't fit my street bike. My disc is less than 7mm, but it still won't fit. Seller says it will fit discs up to 7mm thick.
Z**A
Excellent Gift - Very Satisfied
I bought this disc brake lock with alarm as a gift, and they loved it. It feels strong and well-made, and the alarm is loud enough to provide peace of mind. It’s easy to use and fit perfectly. They were very satisfied with the product and the security it offers. Definitely a great gift option!
D**N
Its tough and loud what more do you need.
Works great.
M**A
Great Extra Security for a Motorcycle
I bought this disc lock alarm for my mom, who lives in Cuba and uses a motorcycle for transportation. I wanted to add an extra layer of security, and it turned out to be a great purchase. The alarm is loud when triggered, which helps deter anyone from trying to move the bike. It feels solid and well built. The reminder cable is also very useful so you don’t forget to remove it before riding. It’s easy to install and remove with the key, and it gives peace of mind knowing there’s added protection. ✔️ Loud alarm ✔️ Sturdy material ✔️ Easy to use ✔️ Good anti-theft option Definitely worth it for added security.
L**3
not as manageable as I would have liked.
For me, this kind of lock isn't a fast action to lock my bike, if you have knee or back problems, you will be on the ground for a while trying to line up a hole with the lock and then securing it. When I'm out and about, if I want to leave in a hurry, the process of locking and unlocking are too difficult for me, it seems like a good lock, but in this day and age, speed is a preference with my security.
A**D
شكرا للبائع كما بالوصف
كما بالوصف
A**O
Fatto bene e funzionante
Fatto bene e funzionante, il prodotto si presenta robusto e ben fatto facile da utilizzare.
S**M
Pas trop encombrant et bien pensé
À date ça fait bien comme alarme et pas trop dispendieux
M**A
Buon prodotto, robusto
Finalmente un buon prodotto economico ma funzionale e comodo
N**R
Super good
Better than expected ❤️
Trustpilot
2 months ago
1 week ago