YOHOOLYO Alarm Disc Lock for Motorcycles and E-Bikes — 110 dB, 7mm Pin, 5ft Reminder Cable, Waterproof

YOHOOLYO alarm disc lock is a compact, waterproof disc brake lock with a 110 dB vibration alarm, 7mm hardened pin, and a 5 ft reminder cable to help deter thieves and secure motorcycles, scooters, and bicycles.

This compact anti-theft lock combines a high-decibel alarm, robust forged stainless steel construction, and a visible physical barrier to protect parked two-wheelers. It installs in seconds on compatible disc brakes and comes with a carry pouch, two keys, replacement batteries, and a reminder cable so riders get both audible and visual deterrents. The lock is designed to work in wet conditions and to give a strong audible alert when vibration or tampering is detected.

How loud and reliable is the alarm when someone tampers with my bike?

The alarm produces up to 110 dB when it senses vibration or shock, making it loud enough to attract attention in most urban settings. Its vibration sensor triggers the alert automatically and continues sounding until the event stops or the correct key is used. The alarm is housed in a waterproof body to maintain performance in rain.

• 110 dB peak alarm for strong audible deterrence
• Vibration-triggered sensor for automatic activation
• Waterproof casing for reliable outdoor use
• Replaceable internal and backup batteries included for longer life

Will this lock fit my motorcycle, scooter, or bicycle disc brake?

YOHOOLYO disc lock fits most discs up to 6 mm thickness and with a maximum 55 mm distance from the disc hole to the edge. It works on motorcycles, scooters, electric bikes, and bicycles that have a suitable disc hole or compatible spoke arrangement. Check your disc thickness and hole-to-edge measurement before purchase for a guaranteed fit.

• Compatible with disc brakes up to 6 mm thick
• Hole-to-edge limit: less than 55 mm
• Suitable for motorcycles, scooters, e-bikes, and bicycles
• Designed for discs with a hole or proper spoke spacing

How easy is it to use and maintain this disc brake lock?

Operation is straightforward: press the lock pin into the disc hole and one press activates the alarm with an audible “beep.” The lock includes two keys, an Allen wrench to service internal components, and a carry pouch for transport. Spare batteries are provided so you can replace cells quickly and keep the alarm functioning.

• One-press locking with a confirmation beep
• Two security keys and carry pouch included
• Allen wrench and extra batteries for maintenance
• Forged stainless steel construction resists cutting and impact

What accessories come with the lock and how do they help prevent theft?

The package bundles practical accessories that increase security and convenience: a 5 ft reminder cable to hook to the handlebars, a carry pouch for tidy storage, additional batteries to extend service life, and two distinct keys. The reminder cable helps prevent riding off with the lock still engaged, while the alarm and visible lock act together as layered deterrents against opportunistic thieves.

• 5 ft reminder cable to prevent accidental riding with lock attached
• Carry pouch for transport and storage
• Extra internal and backup batteries for extended use
• Two unique security keys for redundancy

Who is this for: Riders who park outdoors, commute in urban areas, or need a compact secondary security device will find this lock useful. It’s well suited to motorcyclists, scooter owners, e-bike users, and cyclists who want both a visible physical lock and an audible alarm for added theft deterrence. Verify your disc measurements before ordering to ensure correct fit.