OnGuard Bulldog ATB U-Lock – 127 × 230 mm (5 × 9.06 in) Bicycle & Scooter Lock with 13 mm Hardened Steel Shackle, X2P Double Bolt System, Z-Cylinder, 5 Keys & Mount Bracket

The OnGuard Bulldog ATB U-Lock provides dependable high-strength protection for bicycles, scooters, ATBs, and e-bikes with a wide crossbar design that allows more locking clearance for thicker frames or multiple components. Built with a 13 mm hardened steel shackle, this lock resists cutting, prying, and leverage attacks commonly used by thieves. The X2P Double Bolt locking mechanism secures the shackle on both sides for improved pull resistance, while the precision Z-Cylinder defends against picking, bumping, pulling, and drilling attempts. A rubber-coated crossbar helps protect bike frames from scratches during daily use. Includes five laser-cut keys and a universal mounting bracket for easy on-bike transport.

• Wide Crossbar Locking Clearance: 127 × 230 mm (5 × 9.06 in) design provides extra room for locking ATB frames, e-bikes, scooters, or multiple components to racks or posts.
• X2P Double Bolt Locking System: Dual-sided shackle engagement improves resistance against pulling, twisting, and leverage attacks for dependable urban security.
• 13 mm Hardened Steel Shackle: Heat-treated steel construction resists cutting, jacking, and prying attempts while maintaining strong everyday protection.
• Advanced Z-Cylinder Security: Precision locking core resists picking, drilling, bumping, and pulling attempts for long-term anti-theft performance.
• Complete Security Kit: Includes five laser-cut keys and a universal mounting bracket for convenient on-bike carrying.