TheDrive and its partners may earn a commission if you purchase a product through one of our links. Read more. Thieves steal more than 44,000 motorcycles a year in the United States. The best motorcycle anti-theft system will give you peace of mind when you park your bike outside. Our motorcycle locks review narrows down the best locks on the market. We recommended you combine two to three motorcycle locking systems for maximum security protection. This type of lock goes through the holes of the brake disc and prevents the motorcycle from rolling more than a few inches forward or backward. A thief can remove this type of security lock only by cutting through the steel with heavy equipment, which can be challenging and very noisy. The best motorcycle disc locks are a big deterrent, and they can be placed on either the front or back wheel. Some motorcycles such as vintage bikes may not have the right brakes for this type of lock. This type of lock is used on the handlebars and is also known as a throttle lock, clutch lock, brake lock, or handlebar lock. It clamps down on the brake lever or clutch lever. When properly installed, a grip lock will immobilize the clutch, brake, and t...