Motorcycle security devices fall into two basic categories - motorcycle locks and motorcycle alarms. Motorcycle locks come in various shapes and sizes - disk locks, U-locks, chain locks, cable locks etc. Most motorcycles don't come equipped with an OEM alarm system, but motorcycle alarms are widely available in the aftermarket. Advanced motorcycle alarm systems work the same way as car alarms. Some manufacturers combine a lock and alarm into one. Leatherup.com has a large selection of motorcycle security devices, motorcycle locks and motorcycle alarms. We also offer motorcycle accessories and motorcycle parts.