OnGuard Bulldog Series U-Locks




OnGuard's best selling U-locks feature best-in-class X2P Double Bolt lock mechanisms and super strong 13mm (0.51”) hardened steel shackles for a full circle of protection.

BULLDOG SERIES - High Security Protection

  • Double Bolt Locking Mechanism provides added strength by locking the crossbar to the shackle on two sides
  • Features 13mm ultra hardened steel shackles for maximum cut resistance
  • Dust covers and vinyl coating protects the crossbar, shackle and cylinder from damage
  • Includes multi-size/multi-position mounting bracket, (5) keys (1 with micro-light and 4 regular keys), plus OnGuard's anti-theft protection plan
    • LS: Long Shackle model for added convenience
    • ATB: Slightly wider shackle to fit around extra-fat tires
    • STD: Sized to fit most any bike on the market
    • LM: Lean and Mean is the lightest full size U-lock on the market
    • DT: Includes four foot cable with lock loops on each end
    • Combo: Features user resettable 4-digit combination
    • Mini: Short Shackle model fits in a back pocket
    • Medium: Slightly longer than Mini