OnGuard makes the meanest, toughest locks in the business.

On the inside, OnGuard locks earn the highest safety ratings with double and quad-locking mechanisms, bump-resistant cylinders, and hardened steel shackles and chains. On the outside, our locks are fully-coated to protect your bicycle or powersport vehicle from scratches and to shield internal parts from the elements, while the bright color scheme sends a clear warning to thieves: don’t even try! And then there’s the extras: all-tube mounting brackets, five laser cut keys, key-code registration, comprehensive anti-theft programs, limited lifetime warranties and the best sales and customer support team in the business.

Beast series chain locks offer the highest level of security for locking up your bicycle or powersport vehicle in high crime areas

• Chains made of titanium-reinforced, hardened steel hexagonal links that resist cutting or prying

• Chain cover protects paint and finishes, with an embroidered logo that won’t flake or wear off

• Locks use X4P Quattro Bolt (8016, 8016L) or X2P Dual Lock (8017, 8017LPT, 8018) mechanism that secure the shackle on four or two sides, respectively. 

• Locks use Z-cylinder tumbler mechanism that is bump-proof and resists picking, pulling, or drilling

• Co-molded crossbar cover protects finishes and all-metal endcaps provide protection against hits and drops

• Automatic keyway cover helps seal lock internals against the elements

• 5 laser-cut keys, 1 with micro-LED