Kryptonite New York M-18 WL

The 18mm shackle is exceptionally thick, which is great for security but can be tight. It will fit most standard bike racks and street furniture, but you may find it challenging to lock to thicker, non-standard poles or railings.

The double deadbolt design locks both sides of the shackle into the crossbar. This prevents thieves from twisting the lock to break it, which is a common attack method against locks that only secure one side of the shackle.

Yes, it is surprisingly helpful. Trying to insert a key into a disc-style cylinder in the dark can be frustrating, and the integrated LED light illuminates the keyway perfectly, saving you time and hassle during late-night rides.

Yes, it is a heavy-duty lock designed for maximum security, so it is significantly heavier than standard U-locks. Most riders prefer carrying it in a dedicated bike lock mount or a sturdy backpack rather than on their frame.

The sliding dustcover prevents dirt, grit, and moisture from entering the keyway. Over time, debris buildup can jam the locking mechanism, so keeping the cylinder covered helps ensure the lock operates smoothly for years.

Kryptonite offers a Key Safe program where you can register your key number online. If you lose your keys, they can send you replacements, provided you have registered the code beforehand.