OnGuard Bulldog U-lock

The X2 Double Bolt mechanism secures both sides of the shackle into the crossbar. This design prevents thieves from twisting the lock open or cutting through only one side of the shackle to pry it apart.

Yes, the lock includes an EZ Mount bracket that attaches to your bike frame. It also features integrated anti-rattle bumpers to keep the lock secure and quiet while you are in motion.

The 13mm hardened steel shackle is designed specifically to resist bolt cutters and leverage attacks. While no lock is completely impenetrable, this thickness provides a high level of security suitable for most urban environments.

OnGuard provides five keys with this lock, including one with a built-in light. It is highly recommended that you register your key code with OnGuard immediately after purchase so you can order replacements if you lose your set.

Yes, placing the keyway in the center of the crossbar makes it significantly harder for thieves to use leverage tools to pry the lock open. It limits the space available for tools to get purchase on the lock body.

The lock weighs 2.0 lbs. While it is substantial enough to provide serious security, it is designed to be carried on the frame using the included bracket, which helps distribute the weight effectively while you ride.