Kryptonite's KryptoLok Series 2 915 Integrated Chain is a 9mm-thick, four-sided link chain made of triple-heat-treated, boron-manganese steel for serious strength. Its integrated high-security lock cylinder is pick, drill, and cut resistant. This five-foot chain is covered with a weather-resistant nylon sleeve that protects your bike's finish. Plus, the KryptoLok Series 2 has an anti-theft protection offer of $1500.
Kryptonite's Key Safe Program is an easy way to ensure you always have access to your lock's capabilities. Simply register your key number with Kryptonite and if you lose your keys, your first set of replacement keys are free!