Evolution 1012 four foot steel chain lock

Updated 2026-09-05

Built with 10 mm six-sided chain links made from 3t manganese steel, this four-foot lock offers a high degree of security. The extended length provides more flexibility than standard chains, making it easier to secure the frame and wheels simultaneously. A durable nylon sleeve protects the bike's finish and helps the chain withstand the elements.

The integrated lock head features a patented hardened deadbolt design for extra protection against twist and pull attacks. It uses a high-security disc-style cylinder that is specifically designed to resist picking and drilling. This integrated approach removes the need for a separate padlock, reducing the number of potential weak points in the security system.

The lock comes with three stainless steel keys, including one with a built-in LED light for easier use in the dark. The four-foot reach is particularly useful for e-bikes or larger frames that require more clearance. This model provides a robust security solution for cyclists who need a versatile and reliable anti-theft device.

See details