Kryptonite KryptoLok U-Lock

A 6/10 rating indicates this lock is best suited for short-duration stops in moderate-risk areas. It provides a solid deterrent against opportunistic theft, but for high-crime urban environments or long-term parking, you might want to consider a higher-rated lock from Kryptonite's lineup.

The 4-inch by 11.5-inch dimensions provide enough clearance to secure your frame and rear wheel to most standard bike racks or poles. The 12.7mm hardened steel is thick enough to resist bolt cutters while still being compatible with most locking infrastructure.

The FlexFrame-U bracket is designed to be versatile and fits most standard bicycle frame tubing. However, if you have an unusually shaped frame or an e-bike with a thick battery housing, you may need to test the fit or consider carrying the lock in a bag.

Kryptonite offers a Key Safe Program that allows you to register your key number online immediately after purchase. If you lose your keys, you can order replacements directly through their program, saving you from needing to replace the entire lock.

Yes, the KryptoLok is weather-resistant and built to withstand the elements. The disc-style cylinder is designed to function reliably in various weather conditions, though it is always good practice to keep the keyway clean and occasionally lubricated.

Yes, the protective vinyl coating covers the hardened steel shackle to prevent metal-on-metal contact. This creates a buffer that significantly reduces the risk of scratches or chips on your bike's frame while you are locking and unlocking.