Kryptonite Kryptolok Combo Standard U-Lock

This is a keyless lock. It uses a 4-digit resettable combination, so you do not need to worry about carrying or losing keys.

Kryptonite’s 6/10 rating indicates a moderate level of security. It is suitable for short-to-medium duration stops in metropolitan areas or longer stops in suburban or rural settings, but it may not be sufficient for high-theft areas or overnight storage.

Yes, the 4-digit combination is fully resettable. You can change your code at any time, and Kryptonite also offers a Combo Safe Program to help you register and retrieve your combination if you ever lose it.

The included FlexFrame bracket mounts to your bike frame, allowing you to carry the U-lock securely while riding. It is designed to be adjustable so you can find the best fit for your specific frame geometry.

The lock features a rotating dust cover specifically designed to protect the combination mechanism from dirt, grit, and debris, which helps keep the dials functioning smoothly over time.

The 12.7mm hardened steel shackle is designed to resist standard hand tools and bolt cutters. While no lock is completely impenetrable, this thickness provides a significant deterrent against common opportunistic theft attempts.