Serious security is the only business Kryptonite is in. They're committed to providing innovative products and programs, outstanding value and unparalleled customer satisfaction. Headquartered in Canton, Massachusetts, Kryptonite is a premier manufacturer and marketer of high-quality cables, chains, U-locks and flexible security systems for the bicycle, powersports, snow sports, locksmith, hardware and notebook computer markets. It is with great pride that Kryptonite provides Tough Locks for a Tough World to people in more than 50 countries. Kryptonite has won many awards and accolades over the years.