OnGuard Secure Products

OnGuard bicycle, motorcycle, and powersports locks offer optimal security with the latest technological innovations, quality construction, and ease-of-use all at a great price. You'll enjoy all that the premium brands offer at a significant savings, giving you more for less. Great for commuters, students, and families, OnGuard delivers the meanest locks at the nicest price.

Onguard Mastiff 8020 Bike Chain Key Lock 110cm x 10mm

The OnGuard Mastiff 8020 comes equipped with a 3.5' 10mm thick titanium reinforced hardened square link chain mated to an integrated X2P Dual Lock Down head featuring new double rubber cover for better protection against bumps and hits. 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 wont crack or peel for long lasting beauty. Velcro tabs keep cover in place to help protect paint and finishes.


  • Chain dimensions: 110cm x 10mm.
  • OnGuard Security Rating: 80/100.
  • Sold Secure rating: Bronze.
  • Bump proof Z-Cylinder.
  • The double bolt locking mechanism provides high pull resistance.
  • 100mm titanium enforced hexagonal hardened steel chain.
  • Drilling, picking and high pull resistant offers optimum deterrent against physical attack.
  • Automatic keyway covers helps seal lock internals against the elements.
  • Includes 5 laser cut keys, 1 with Micro LED .
  • Water and heat resistant embroidered chain cover with velcro closures.
  • Anti-theft guarantee of £1500.
  • Weight 3.0kg (inc keys).