Named after the city that tops the "Top 10 Worst Cities for Bicycle Theft," the Kryptonite New York Fahgettaboudit U-Lock (or the NYFU) is beefier and more sophisticated, resistant to bolt cutters and leveraged attack, and guaranteed impenetrable. Its 18-millimeter shackle (the “U” part of the unit) is made with so much hardened steel that it could moonlight as a dumbbell (it weighs more than 4 pounds). Any prospective thief will skip a bike protected by this poison-frog-yellow lock that would take forever to hacksaw through.
Named for the only material that can defeat Superman, Kryptonite has been making locks for high-crime, low-visibility areas since the 1970s. The company’s redesigned, high-security disc-style cylinder is pick-proof, backed up with a $4,500 anti-theft warranty. In an early test of the Kryptonite U-Lock, a bicycle was locked to a signpost in Greenwich Village in New York City for thirty days. Thieves stripped the bike of every part that could be removed, but the lock resisted all attempts to break it.
Includes oversized hardened steel sleeve over crossbar for double security, double deadbolt locking for extensive holding power, a sliding dustcover to protects and extend cylinder life, and 3 keys (one lighted with high intensity bulb & replaceable battery).