Motorcycle alarms are various security devices and systems for preventing motorcycle theft. Most motorcycles don't come equipped with OEM alarm systems, though they may have some basic anti-theft protection such as a steering lock. Aftermarket motorcycle alarms are widely available. A motorcycle alarm can be a device that combines an immobilizer (disk lock or wheel lock) with an alarm (see Xena disk lock alarms). Advanced motorcycle alarm systems (check Gorilla motorcycle alarms) have the same features as car alarms - powerful siren, key chain remote, 2-way pager, motion sensors, LED alarm status indicator, etc. Leatherup.com has a wide selection of motorcycle security devices, motorcycle alarms, and motorcycle locks.