10 Best Motorcycle Alarms 2025 in the United States

This motorcycle alarm disc brake lock from Mathtoxyz offers solid protection with its loud 110dB alarm that activates when it senses shocks or movement, effectively deterring thieves. The alarm is built into the lock itself, making it an all-in-one security solution that's easy to use—just press a button to lock and arm it, with a key to disarm. Its sensitivity is optimized through special algorithms that reduce false alarms, a common issue with similar devices.

The lock is made of durable aluminum alloy and is waterproof, suitable for outdoor use in various weather conditions without rusting or failing. Its battery life depends on replaceable batteries, allowing long-term maintenance of power, though users need to remember to replace them periodically. Installation is straightforward since it fits most motorcycles and bikes with disc brakes thinner than 7mm. It also includes helpful extras like a 5ft reminder cable, keys, a hex key, and a carry pouch.

Note that batteries are not included with the lock and must be purchased separately before use. Additionally, while it fits a wide range of vehicles, it is not suitable for disc brakes thicker than 7mm, so checking your bike’s specifications before buying is important. For anyone seeking a reliable, weather-resistant disc lock with a loud alarm and easy setup, this product provides great value and peace of mind.

The URBAN UR6 Hi-Tech Alarm Disc Lock offers robust security for motorcycles, scooters, and bicycles. One of its standout features is the alarm system, which can be turned on or off, and emits a loud 120dB noise to deter thieves. The A+ sensitivity ensures it is highly responsive, and the warning function with light alert adds an extra layer of protection by providing an early alert before the alarm fully activates.

Additionally, it is compatible with various types of vehicles due to its 6mm locking pin, though users with larger brake disc holes might need a different model like the UR10 with a 10mm pin. The replaceable electronic module and long-lasting CR2 battery, which can last up to 2-3 years and is unaffected by cold weather, add to its convenience. Installation is simple, allowing for one-handed locking without a key. It is also fully waterproof, making it reliable in all weather conditions.

It does not come with a remote control, which could be a drawback for some users. Additionally, while it is practical, the need for optional brackets (not included) for carrying it safely when locked might be an inconvenience. However, its strong performance, ease of installation, and high level of security make it a great choice for those looking to protect their two-wheelers. The product is backed by a reputable European manufacturer, URBAN, known for high-security locks, and offers a 2-year warranty for peace of mind.

The Kryptonite Alarm Disc is a robust anti-theft motorcycle lock equipped with a loud 120dB alarm system, making it a strong choice for those needing extra security for their motorcycles, scooters, or other valuable items. Its heavy-duty design features a 6mm hardened steel locking pin and a zinc diecast body, ensuring durability and resistance to physical tampering.

The alarm is quite sensitive and activates automatically when the lock is engaged, providing an additional layer of security. The lock is powered by replaceable lithium batteries that can last up to a year, which is convenient for long-term use without frequent battery changes. Installation is straightforward with a simple key-locking mechanism, making it user-friendly even for those who are not tech-savvy.

The weather-resistant construction ensures that the electronics are protected from the elements, although the product does not mention specific water resistance ratings. One limitation of this alarm disc is the absence of a remote control feature, which could have added to its convenience. This product is best suited for individuals looking for a durable and loud alarm system to secure their motorcycles or similar items, particularly those valuing ease of use and long-lasting battery life.