Kryptonite Evolution Chain Lock

The Evolution Chain Lock weighs 6.10 lbs (2.77 kgs). While it is substantial enough to offer serious security, it is best suited for commuters who are comfortable carrying a bit of extra weight in a backpack or pannier rather than those looking for an ultralight solution.

The 90cm (3-foot) length is versatile for most standard bike racks, lamp posts, and parking meters. However, if you frequently lock your bike to thicker poles or need to secure both wheels and the frame, you may find the length slightly limiting compared to longer chain options.

Yes, it is a practical feature. By covering the keyway when not in use, it prevents dirt, grit, and moisture from entering the cylinder, which significantly reduces the risk of the lock jamming or seizing over time.

The lock comes with three keys in total: one LED-lighted key and two standard ergonomic keys. If you lose all of them, you will need to rely on Kryptonite's Key Safe program, which allows you to order replacements if you registered your key number when you first purchased the lock.

Yes. It features a high-security disc-style cylinder specifically designed to resist picking and drilling attempts. Combined with the reinforced oval crossbar, it provides a robust deterrent against common street-level theft techniques.