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 Wsdcam 113dB Bike Alarm offers a loud alarm volume, which is an essential deterrent against theft. With 7 levels of sensitivity, the alarm can be adjusted to suit different environments and preferences, making it versatile. The adjustable sensitivity is particularly useful for preventing false alarms in high-traffic areas. Battery life is enhanced by battery-saving technology, which is important for reducing maintenance and ensuring long-lasting performance. The IP55 waterproof rating ensures the alarm can withstand various weather conditions, a critical feature for outdoor usage.

Installation is straightforward with wireless control via a remote, which has a strong range of up to 66ft, allowing convenient operation. Additional features like the vehicle search function with 3 kinds of bells can help locate your bike in crowded parking lots. The alarm's compact dimensions make it suitable for bikes, electric bikes, motorcycles, and scooters.

However, the battery-powered nature might require periodic replacements, which could be a minor inconvenience. Additionally, while the alarm is effective, the remote control range might not be sufficient for very large areas. The product is well-made, but some users might find the sensitivity settings challenging to fine-tune initially. The Wsdcam 113dB Bike Alarm is a robust choice for various types of vehicles, offering reliable performance and useful features, though it might need slight adjustments in sensitivity settings and battery replacements over time.

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.