Kryptonite Evolution Series 4

The Transit FlexFrame-U is a mounting bracket that attaches to your bike frame, allowing you to carry the lock securely while you ride. It is designed to be versatile, fitting various frame tube shapes and sizes so the lock stays stable and out of the way.

Yes, the 14mm hardened steel shackle is specifically engineered to resist common theft tools like bolt cutters and leverage attacks. Its thickness and material composition make it a significant deterrent for opportunistic thieves.

Kryptonite offers a Key Safe Program, which allows you to register your key number with them. If you lose your keys, you can request replacements directly through their program.

To keep the cylinder operating smoothly, it is a good idea to occasionally lubricate the mechanism. The lock also features a sliding dust cover, which helps prevent debris and moisture from entering the cylinder and causing issues over time.

The Evolution Series 4 weighs 3.75 lbs (1.70 kgs). While it is substantial enough to provide high-level security, it is best suited for riders who prioritize protection over ultra-lightweight gear.

The LED light is built into one of the three included keys to help you easily locate and operate the keyhole in low-light conditions, such as at night or in dark parking areas.