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🔒 Lock it. Alarm it. Own the street with confidence.
The Mathtoxyz Alarm Disc Lock combines a powerful 110dB alarm with smart shock sensors and durable waterproof aluminum alloy construction. Designed to fit most motorcycles and bikes with disc brakes under 7mm thick, it offers professional-grade security with easy one-button activation and replaceable batteries. Perfect for urban riders seeking reliable, high-impact theft protection that stands up to all weather conditions.











| ASIN | B08W1H4QXL |
| Audible Noise | 110 Decibels |
| Best Sellers Rank | #22,630 in Automotive ( See Top 100 in Automotive ) #15 in Powersports Alarms & Anti-Theft |
| Brand | Mathtoxyz |
| Compatible Devices | Motorcycles |
| Customer Reviews | 4.6 out of 5 stars 3,590 Reviews |
| Includes Remote | No |
| Manufacturer | Mathtoxyz |
| Maximum Range | 15 Meters |
| Mfr Part Number | MA-CS-B |
| Model Number | MA-CS-B |
| Noise Level | 110 Decibels |
| Remote Control Included? | No |
| UPC | 887511762463 |
| Unit Count | 1 Count |
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!!!!
D**N
Its tough and loud what more do you need.
Works great.
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!
E**A
Sensitive alarm
It works good with the sensitive motion part but sometimes it beeps out of nowhere and the alarm sounded as well. But over all it's a good bike lock .
C**R
Great Disc Locks!
I have these disc brake alarms on both of my motorcycles and absolutely love them. The alarm is super loud and helps to give you some peace of mind for securing your bike. Simple to use, cost is perfect and they do their job!
R**N
Works Awesome
Love this alarm. Its loud and works just as good as the HD name brand for half the cost. Wish I seen it sooner and could have saved some money for sure.
S**.
Definitely worth the price.
my 2019 Harley Davidson St. glide has a security system already but sometimes we park our bikes and some not so great places to sensitivity is good. The quality seems great easy to install. I love the color matches my bike for the price, very great value and quality I cannot complain. The lock quality seems well.
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.
R**D
سئ جدا
سئ جدا القفل فك لوحده فجأة وطلع من بعضه من جوه
A**D
شكرا للبائع كما بالوصف
كما بالوصف
C**E
It’s worth buying
My Personal Review – Great Motorcycle Alarm! I recently got this motorcycle alarm, and I have to say, it’s worth every penny. The build quality is solid, and it doesn’t feel cheap at all. One of my biggest concerns with alarms is false triggers, but this one is well-calibrated—it won’t go off with small bumps or wind, yet it reacts instantly when the bike is actively moved. The sound is extremely loud, which is exactly what you want to deter thieves. Installation was straightforward, and it gives me peace of mind knowing my bike is protected. If you’re looking for a reliable and effective security solution for your motorcycle, I highly recommend this alarm!
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
Trustpilot
2 weeks ago
3 days ago