Skip to content
We are kid's bike specialists. Free shipping on bike accessories orders over $50. FREE Shipping on select Frog Bikes!
Free shipping on accessories orders over $50. FREE Shipping on select Frog Bikes!

OnGuard Bulldog 8011 Mastiff Key Chain Lock

by Onguard
Original price $49.95 - Original price $49.95
Original price $49.95
$49.95 - $49.95
Current price $49.95

Mastiff series chain locks provide superior protection for medium/high crime areas and are packed with features


  • Chains made of titanium-reinforced, hardened steel links that resist cutting or prying
  • Chain cover protects paint and finishes, with an embroidered logo that won’t flake or wear off
  • Locking mechanisms secure the lock at multiple points: X4P Quattro Bolt shackles on models with separate shackle; X2P Double Bolt on models with integrated locking heads.
  • 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
  • Anti-Theft Offer:
  • 8019, 8019L,8019LP: $1001 for Powersport; $3001 for Bicycle
  • 8020, 8021, 8117, 8118: $501 for Powersport; $2001 for Bicycle
  • 80119, 8120, 8121: $501 for Powersport; $1501 for Bicycle
30 Day Low Price Guarantee
Call or Text with us


Hassle Free Returns & Exchanges
Fast & Free Shipping

Orders over $50 + ( & select bikes)