Maximum-Security U-Lock for High-Risk Parking
The Kryptonite New York U-Lock (4" x 8") is built for riders who leave their bikes in places where theft is a real concern. The compact shackle gives thieves less room to work, while the 16 mm hardened MAX-Performance steel stands up to serious bolt-cutter and leverage attacks. This is one of Kryptonite’s highest-security locks, made for dense urban racks, signposts, and crowded bike corrals.
A hardened double deadbolt and high-security disc-style cylinder add another layer of protection against twist and picking attempts. An oversized steel sleeve reinforces the crossbar, and the included FlexFrame bracket makes it practical to carry on your bike every day instead of in a bag. If you want a U-lock that takes theft resistance seriously, this is the one to reach for.
Simple. Solid. Reliable.
- 16 mm hardened MAX-Performance steel shackle resists bolt cutters and leverage attacks.
- Hardened double deadbolt locks both sides of the shackle for better resistance to twisting and prying.
- High-security disc-style cylinder increases protection against picking and drilling.
- Oversized hardened steel sleeve over the crossbar reinforces a common attack point.
- Compact 4" x 8" internal size gives thieves less room to insert tools while still fitting most frames and racks.
- Includes three stainless steel keys: two standard keys and one LED key for use in low light.
- Transit FlexFrame U-bracket lets you mount the lock to your frame in multiple positions for a stable, rattle-free carry.
- Kryptonite security rating of 9/10 for high-risk environments and long parking durations.