Kryptonite New York Lock M-18NX is designed to lock up powersports vehicles, but it will work with bicycles as well. Because it's designed to lock up high priced vehicles, this lock has maximum security rating of 12 out of 12.

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Features & Specs:

Security Rating: 12 out of 12

Dimensions: 3.2" x 11.9" (81mm x 302mm)

18mm hardened MAX-Performance steel shackle resists bolt cutters and leverage attacks

Oversized hardened steel sleeve over crossbar for double security

Double deadbolt locking for extensive holding power

High security disc-style cylinder

Center keyway defends against leverage attacks

Protective vinyl coating

Sliding dustcover protects and extends cylinder life

3 keys - one lighted with high intensity bulb & replaceable battery

Anti-theft Protection: US & CAN Powersports - $1250