Kryptonite Kryptolock U-Lock

A 6/10 rating indicates this lock is best suited for short-term stops in moderate-risk areas or as a secondary lock in high-risk urban environments. It provides solid protection against common hand tools, but for overnight parking in high-theft cities, you might want to consider a higher-rated model.

The 4x9 inch dimension is a standard size that fits most road, hybrid, and mountain bikes. However, if you have an unusually thick frame or a non-traditional geometry, measure the space inside your rear triangle to ensure the shackle can comfortably reach around your frame and a secure post.

The 48-inch cable is designed to loop through your front wheel and then attach to the U-lock, allowing you to secure both wheels at once. It acts as a deterrent for opportunistic theft rather than a primary security device, so always ensure your frame is locked with the U-lock itself.

The FlexFrame-U bracket is designed to attach to various frame tube shapes and sizes. Once tightened, it holds the lock firmly in place, and the built-in anti-rattle bumpers prevent the lock from clanking against your frame while you ride.

Yes, the protective vinyl coating covers the hardened steel shackle to prevent metal-on-metal contact. It effectively stops the lock from scratching or chipping your bike's finish during locking and unlocking.

The lock features a rotating dust cover that keeps debris out of the cylinder, which is your first line of defense. If you live in a wet or salty climate, applying a silicone-based lubricant to the keyway once or twice a year will keep the double deadbolt mechanism operating smoothly.