10 Best Bike Alarms 2026 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 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.

The WSDCAM Smart Bike Tail Light is a multifunctional bike accessory that combines an alarm, tail light, turn signals, and a brake light into one unit. The alarm is designed to deter thieves with a 110-decibel horn and adjustable sensitivity levels, making it highly effective in providing security. The tail light is ultra-bright with six different modes and up to 160 lumens, ensuring excellent visibility during both day and night rides.

Additionally, the integrated turn signals and automatic brake light feature enhance safety by clearly communicating your intentions to other road users. The battery life is impressive, with up to 70 hours of operation on a full charge, and it recharges via USB-C. The device is IP65 waterproof, making it reliable in various weather conditions. However, it is worth noting that the alarm volume and sensitivity might be too sensitive for some users, potentially leading to false alarms.

The ease of installation is a significant plus, as it mounts easily to the handlebar, and the wireless remote control offers convenience. Additional features like smart auto on/off, low battery indicator, and the compact design make this a practical choice for bike enthusiasts seeking a comprehensive security and lighting solution for their rides.