Kryptonite Krypto Series 2

At 2.45 lbs, it is substantial enough to feel secure but light enough for most commuters to carry comfortably. The included FlexFrame U-Bracket makes it easy to attach directly to your bike frame, so you don't have to carry the weight in a backpack.

The internal dimensions are 83mm x 178mm. While it fits most standard bike racks and parking meters, it is a compact lock, so you may find it tight if you are trying to secure your frame and both wheels simultaneously.

The double deadbolt design locks both sides of the shackle into the crossbar. This requires a thief to make two separate cuts to open the lock, rather than just one, which significantly increases the time and effort needed to defeat it.

Yes, especially if you ride in wet or dusty climates. It prevents grit, road salt, and debris from entering the keyway, which helps keep the internal mechanism moving smoothly and prevents the lock from seizing up over time.

Yes, Kryptonite offers a key replacement program. Be sure to register your key number with them immediately after purchase so you can easily order a duplicate if you misplace your set.