Kryptonite Keeper U-Lock Bicycle Lock

The longer shackle provides extra clearance, making it easier to lock your bike to thicker poles, racks, or street furniture that a standard-sized U-lock might not fit around.

The bracket mounts directly to your bicycle frame, allowing you to click the lock into place for easy transport while you ride, so you don't have to carry it in a backpack or bag.

If you lose your keys, Kryptonite's Key Safe Program allows you to register your key code with them online. If you ever lose your keys, they will ship your first two replacement keys to you for free, anywhere in the world.

Yes, the protective vinyl covering is essential for preventing the hardened steel shackle from scratching or chipping your bicycle's paint frame while you are locking it up.

This is a program where Kryptonite offers up to $500 in reimbursement if your bicycle is stolen due to the opening or breaking of the lock by force. You must register your lock on the Kryptonite website after purchase to be eligible.

While the 12mm hardened steel shackle and disc-style cylinder offer strong resistance against bolt cutters and leverage attacks, it is generally considered an entry-to-mid-level security lock. For high-risk areas or long-term parking, you might consider pairing it with a secondary cable or opting for a thicker, higher-security model.