Kryptonite New York Chain and Evolution Series 4 Disc Lock

At 5.5 feet, this chain offers significant length, making it versatile enough to secure your bike to most standard street poles, bike racks, or railings. However, if you frequently lock up in areas with very thick or unusual infrastructure, you may find the length more restrictive than a standard U-lock.

No, the chain is encased in a durable nylon sleeve specifically designed to act as a buffer between the hardened steel links and your bicycle frame, preventing scratches and dings.

The double deadbolt design is engineered to resist twist attacks, which are common methods thieves use to pry locks open. By locking both sides of the shackle, it significantly increases the force required to compromise the security system.

Kryptonite offers a Key Safe Program where you can register your key number online immediately after purchase. If you lose your keys, you can request replacements directly through their program.

Yes, this is a heavy-duty security solution made of 12mm hardened manganese steel, so it is substantial in weight. It is best suited for commuters who have a dedicated way to carry it, such as wrapping it around the frame or carrying it in a sturdy pannier bag.

Yes, one of the three included stainless steel keys features an integrated LED light. It is quite helpful for illuminating the keyhole when you are locking up in dimly lit alleys or late at night.