OnGuard Bulldog 4.5 U-Lock Bike Lock with 4ft Security Cable

The OnGuard BullDog U-Lock delivers unmatched security for cyclists seeking reliable protection in demanding environments. Designed with urban riders in mind, this lock combines cutting-edge engineering and robust materials to safeguard your bike against theft in high-risk areas such as city streets, bike racks, or parking garages. At its core lies the X2P Double Bolt mechanism—a dual-layered system that reinforces resistance to drilling and picking attempts—ensuring peace of mind even in bustling locations where theft risks are elevated. The lock’s 13mm hardened steel shackle is forged from military-grade material, providing exceptional durability while maintaining a portable profile that’s easy to carry on-the-go.

Key features include:
– Unyielding Strength: With a tested breaking force of 4.6 tons, this lock outperforms many competitors in resisting brute-force attacks.
– Multi-Layer Security: A reinforced sleeve encases both the crossbar and cylinder, deterring unauthorized access and protecting against environmental wear.
– Confidence-Building Warranty: Enjoy a full year of worry-free use with OnGuard’s anti-theft guarantee—a rare commitment from brands in this category.

Ideal for commuters and adventure cyclists alike, the BullDog U-Lock offers a practical solution for securing frames and wheels to fixed objects without compromising portability. Its compact design ensures it fits seamlessly into backpacks or pockets while delivering fortress-like protection when locked down.

Whether you’re locking up at a downtown café or securing your ride overnight at a transit station, the BullDog’s combination of power and portability makes it a standout choice for serious cyclists who demand top-tier protection without added bulk.