OnGuard 8009 Bulldog U-lock

The X2P double bolt mechanism secures both sides of the shackle into the crossbar. This design is significantly harder to defeat because a thief would need to make two separate cuts to open the lock, rather than just one.

The inner dimensions are 292mm by 115mm. This provides enough clearance for most standard bike frames and rack posts, but it is always best to measure the specific rack you plan to use most frequently to ensure a comfortable fit.

The included EZ Mount bracket is designed to be versatile and fit most standard bicycle frame tubes. However, if you have an unusually shaped or oversized frame, you may need to adjust the mounting position or consider carrying the lock in a bag.

Yes, the lock uses a disc-style cylinder, which is inherently more resistant to picking and drilling than standard pin-tumbler locks. The five included keys are precision-cut to match this high-security mechanism.

These bumpers are small rubberized additions that prevent the metal shackle from clanking against the crossbar while you are riding. They make your commute quieter and help protect the finish of your bike frame.

The high-intensity light included on one of the five keys is designed specifically to help you locate the keyway in low-light conditions. It is bright enough to illuminate the lock cylinder clearly so you can unlock your bike quickly at night.