Onguard Bulldog STD Combo U-Lock

Our best-selling U-locks feature the best-in-class X2P Double Bolt lock mechanisms and super-strong 13mm (0.51”) hardened steel shackles, providing a full circle of protection. Perfect for cyclists and power sport users.

• Standard shackle, combo Bulldog U-Lock offers robust security and ease of use.
• X2P Double Bolt Locking Mechanism locks the shackle on both sides, maximizing resistance to pulling forces.
• NEW Z-Cylinder is engineered to be bump-proof and resists picking, pulling, and drilling, enhancing lock security.
• 13mm (0.51”) hardened steel shackle withstands cutting, prying, and jacking attempts.
• Rounded design with centered keyway eliminates potential pry points for added safety.
• NEW double rubber-coated crossbar cover shields your bike’s paint and finishes from scratches.
• NEW extra-thick molded end caps provide additional protection against impacts and bumps.