OnGuard 8011 Bulldog U-Lock

The X2 Double Bolt mechanism locks both sides of the shackle into the crossbar. This design significantly increases resistance to twisting and prying attacks, which are common methods used to bypass locks that only secure one side of the shackle.

The Bulldog 8011 measures 127mm x 230mm. It is a standard mid-size U-lock, which offers a good balance between portability and internal locking space, but you should measure your bike's frame tubes and the areas you typically lock to ensure it provides enough clearance.

The EZ Mount bracket is designed to be versatile and fits most standard bicycle frame tubing. However, if you have an unusually shaped frame or a very thick e-bike frame, you may need to test the fit or consider carrying the lock in a bag.

The center keyway is positioned to make it much harder for thieves to use leverage tools, such as pry bars or jacks, to force the lock open. By keeping the cylinder centered, the lock is less vulnerable to the twisting force that can snap weaker locking mechanisms.

Yes, the bumpers are designed to sit between the shackle and the crossbar. They effectively dampen the metal-on-metal vibration that typically causes that annoying clanking sound while you are riding over bumps or rough pavement.

This lock includes five keys in total. One of these keys features a built-in light, which makes it much easier to locate and operate the keyway when you are locking or unlocking your bike in low-light conditions.