10 Best Bike Alarms 2025 in the United States

The YOHOOLYO Alarm Disc Lock is a solid choice for securing your motorcycle, bicycle, or scooter. It is made entirely of metal, which makes it sturdy and durable. The alarm reaches a loud 110 dB, which is effective in deterring potential thieves. The 7mm pin allows for flexible positioning on the disc brake, and the lock fits various vehicles with disc brakes, including motorcycles and scooters.

The alarm is sensitive, with a motion sensor that triggers after a 5-second delay, providing a good balance between sensitivity and false alarms. It is also resistant to physical damage and weather conditions, ensuring reliability in different environments. The lock includes six internal batteries and six backup batteries, which extend its usage time. Additionally, an Allen wrench and carry pouch are provided for convenience.

It is worth noting that the item is relatively small and lightweight, at 12.3 ounces and dimensions of 3 x 2.8 x 1 inches, which might make it less intimidating to potential thieves. Also, installation might require some practice, especially for users not familiar with disc brake locks. The inclusion of a reminder cable helps prevent accidental riding with the lock engaged. Given its combination of features, this product is a reliable choice for those seeking a robust anti-theft solution for their vehicles.

The USUPERINK Bike Alarms for Ebikes come with a robust set of features aimed at providing effective anti-theft security. One of its standout strengths is the alarm volume, which can reach up to 113dB—super loud and excellent for deterring thieves. The alarm also offers three adjustable volume levels and seven levels of sensitivity, allowing users to tailor the settings to their specific needs, whether it's a gentle touch or a strong push that triggers the alarm. This flexibility makes it suitable for various applications, including bicycles, motorcycles, and even doors and windows.

The IP65 waterproof rating means it can handle outdoor conditions well, adding to its durability and reliability in different weather scenarios. Another advantage is the ease of installation—no screws or wiring are required, and it comes with double-sided stickers and straps for straightforward setup. The wireless remote control is a convenient feature, offering a strong range of up to 66 feet, and includes a vehicle search function to help locate your bike in a crowded area.

The product does have some limitations. Battery life could be a concern as it requires 3 AAA batteries, which might need frequent replacements depending on usage. Additionally, while the alarm can be very loud, some users might find even the lowest setting too loud for their preference. The remote control feature is quite useful, but it could be less reliable if obstructed by physical barriers. Despite these minor drawbacks, the USUPERINK Bike Alarms for Ebikes offer a solid balance of functionality and user-friendly features, making them a strong choice for those looking to enhance the security of their bikes or similar items.

The Kryptonite Alarm Disc is a solid option for those looking to secure their motorcycles or other valuable items. One of its standout features is the 120dB alarm, which is quite loud and effective in deterring theft. The alarm activates upon detecting tampering, showcasing good sensitivity and providing an extra layer of security. The lock itself is made from durable alloy steel with a 6MM hardened steel locking pin, making it tough to break and suitable for various rotor sizes.

Additionally, the weather-resistant design ensures the electronics module is protected from the elements, making it reliable in various weather conditions. Battery life is impressive, with the replaceable lithium battery lasting up to a year, so you won't need to worry about frequent replacements. Installation is straightforward due to the simple key-locking mechanism, making it user-friendly even for those less familiar with technical setups.

However, while the lock is heavy-duty and multifunctional, it might be somewhat bulky for smaller bikes or items like backpacks. Some users may find the weight and size (9 x 6 x 2 inches) to be a bit cumbersome for regular handling. The Kryptonite Alarm Disc provides robust security features and ease of use, making it a suitable choice for motorcycle owners or anyone needing strong anti-theft protection.