Flexible High-Security Chain for Tough Lock-Ups The Kryptonite Evolution 4 1016 Chain Lock is built for riders who need serious security and flexible locking options. With 5.25 ft (160 cm) of chain, it is long enough to reach awkward racks, posts, or railings while still keeping slack under control. The 10 mm six-sided links are made from 3T hardened manganese steel, offering strong resistance to cutting and leverage attacks in busy city environments. An integrated Evolution Series 4 disc-style lock head secures directly to the chain, removing the typical weak point of a separate U-lock shackle. A reinforced oval crossbar, End Link design, and high-security cylinder work together to resist picking, drilling, and twisting. A tough nylon sleeve protects your frame from scratches and makes the chain easier to handle on the daily commute. Built to Last 10 mm six-sided chain links made from 3T hardened manganese steel for high cut resistance. Integrated Evolution Series 4 lock head with End Link design that secures the chain to a hardened deadbolt. High-security disc-style cylinder that is pick and drill resistant for added peace of mind. Patented reinforced oval crossbar and double deadbolt-style locking to resist twist and pry attacks. Durable, weather-resistant nylon sleeve helps prevent frame damage and keeps the chain quieter in transit. Sliding dust cover protects the cylinder from grit and moisture, extending service life. Includes three stainless steel keys, one with an LED light and replaceable battery. Kryptonite security rating of 8/10, suitable for high-risk urban parking and longer lock-up times.
