Cycling > Locks > U-Locks

Slip the Cutter Commuter U-Lock in your belt and forget your bike thief paranoia. This hardened steel alloy u-lock is the U in the F U to the bike-thieving dregs of society. Simple, burly, and heavy enough to scare off motorists who know better, the Commuter owns the city streets....

Don't even think about it. This is one Bulldog of a lock! Lock uses the legendary M-Cylinder™ mechanism for theft deterrence Anti-drill and pick-proof guts make this a super-secure package Dual Steel Bar™ locking mechanism delivers up to 10 tons of pull strength Features a new 13mm (1/2'') massive hardened-steel...

The Bulldog™ combo lock allows you to lock up your bike with confidence. Massive 13mm (1/2") hardened ultra steel shackle provides maximum cut resistance Dual Steel Bar™ locking mechanism delivers up to 10 tons of pull-strength M-Cylinder™ inner locking mechanism delivers legendary pick-proof protection and its key has over 1...

The OnGuard Bulldog Mini is tough yet weighs under 2 pounds. Lock uses the legendary M-Cylinder™ mechanism for theft deterrence Anti-drill and pick-proof guts make this a super-secure package Dual Steel Bar™ locking mechanism delivers up to 10 tons of pull strength Features a massive 13mm (1/2 inch) hardened-steel shackle...

This standard size U-Lock uses the legendary M-Cylinder™ mechanism for theft deterrence. Anti-drill and pick-proof guts make this a super-secure package Dual Steel Bar™ locking mechanism delivers up to 10 tons of pull strength Features a new 13mm (1/2'') massive hardened-steel shackle for strength Ballistic™ plastic holds up to the...

The Pitbull DT U-Lock with the X4 Power Quattro Bolt Locking mechanism provides unequaled strength by locking the crossbar to the shackle on 4 sides, maximizing pull resistance. Massive 13mm (1/2 in.) hardened steel shackle provides maximum cut resistance M-Cylinder™ inner locking mechanism delivers legendary pick-proof protection and its key...

The OnGuard Pitbull™ U-lock uses hardened steel and a pick-proof lock to protect your ride like a viscious dog. Massive 13mm (1/2") hardened ultra steel shackle provides maximum cut resistance M-Cylinder™ inner locking mechanism delivers legendary pick-proof protection and its key has over 1 million variations Dual Steel Bar™ locking...

The Planet Bike Extra Guard Sport Standard U-Lock comes in handy when you need to lock your bike up, and this lock gives you something solid and sturdy to shake at threatening, rude motorists. A multi-position mounting bracket secures the U-Lock to your frame and lightens the load in your...

Worried that your bike will easily break out of those common-security locks? Connect the Planet Bike Mini Extra Guard U-Lock to your double-ended cable and apply maximum security to your two-wheeled steed. The hardened steel shackle and bar, center lock position, and flat-key locking system deter any escape plans that...

The Pitbull™ Mini LS bike lock uses the toughest steel and a pick-proof lock to protect your ride like a viscious dog. Massive 13mm (1/2") hardened ultra steel shackle provides maximum cut resistance M-Cylinder™ inner locking mechanism delivers legendary pick-proof protection and its key has over 1 million variations Dual...

The Pitbull™ STD bike lock uses the toughest steel and a pick-proof lock to protect your ride like a viscious dog. Massive 13mm (1/2") hardened ultra steel shackle provides maximum cut resistance M-Cylinder™ inner locking mechanism delivers legendary pick-proof protection and its key has over 1 million variations Dual Steel...

You don’t even want to tempt sticky, bike-stealing fingers with a cable or chain lock. Grab the Planet Bike Super Guard Standard U-Lock and secure your steed with a hardened-steel shackle and bar. The flat-key locking system deters pickers and a multi-position mounting bracket attaches the lock to your bike...