OnGuard Mastiff Series Chain Locks




With slightly smaller, squared links compared to the BEAST chains, the MASTIFF series offers bicycle owners and powersport enthusiasts ultimate security for use in high crime areas. Oversized, titanium reinforced hexagonal links render hacksaws and bolt cutters virtually useless while tight inside link dimensions make prying impossible. 

MASTIFF SERIES - Ultimate protection for high crime areas

  • High security, lower weight locks with 6-10mm hex-link chain with titanium reinforcement making them almost impossible to cut.
  • Hexagonal and square links present more hardened surfaces than round links making sawing and cutting virtually impossible.
  • Titanium surface hardening vastly increase cut and saw resistance.
  • Embroidered nylon chain covers won’t crack or peel for long lasting beauty. n Velcro tabs keep cover in place to help protect paint and finishes.
  • Both include water and heat resistant cover on chain to prevent scratching
    • Padlock Model - Features a Dual Lock Mechanism and includes (5) keys (1 with micro-light and 4 regular keys)
    • Combination Model - Features a five digit resettable lock
      • Length: 48"