Kryptonite KryptoLok Series 2 Integrated Chain

While the exact weight can vary slightly, this 5-foot chain is substantial due to the 9mm boron-manganese steel links. It is designed for security rather than lightweight portability, so it is best suited for commuters who can leave it at their destination or carry it in a sturdy backpack or pannier.

No, the chain is encased in a durable, weather-resistant nylon sleeve. This protective cover prevents the metal links from making direct contact with your frame, keeping your paint job safe from scratches and dings.

At 1500mm (5 feet) long, this chain offers significant reach. It is long enough to wrap around most standard bike racks, street poles, and even larger posts, giving you more flexibility in where you can lock up compared to a standard U-lock.

Kryptonite offers a Key Safe Program for this product. If you register your key number with them after purchase, they can provide free replacement keys if yours are ever lost or stolen.

The integrated cylinder is specifically engineered to resist picking and drilling. While no lock is completely impenetrable, this mechanism is designed to deter common theft tools and techniques, providing a high level of security for everyday use.

Yes, this product includes an anti-theft protection program. You should register your lock on the Kryptonite website immediately after purchase to qualify for the program's benefits.