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The OnGuard Bulldog Medium 8013M U-LOCK is a sturdy bike lock. Made from hardened steel, it features a 13 mm shackle that is resistant to cutting. Its size of 90 x 175 mm makes it easy to transport and convenient to use.

Basic data

Brand OnGuard
Country of origin of the brand USA
Sport Bicycles
Gender Not applicable
Season Year-round
Leading colour Black
Model/product code Bulldog Medium ONG-8013M
Type of Product U-lock
Code 2000126080

Product details

Lock type On key
Fastener length 17,5 cm
Clasp diameter 13 mm
Material Hardened steel
Technologies X2P - Double Bolt, Z-Cylinder, SBC - Steel Ball Combo

Warnings and producer's data

Producer Todson | Inc. 4 Cocasset Street Foxboro, MA 02035 | info@onguardlocks.com | AMP SOURCE Siulczyńska Spk | Wielkopiecowa 6 42-200 Częstochowa Polska | info@amppolska.pl

OnGuard Bulldog Medium 8013M U-Lock bicycle lock (ONG-8013M)

OnGuard Bulldog Medium 8013M U-Lock Bicycle Lock is a solid solution for every cyclist looking for reliable protection for their equipment. Made of hardened steel, it offers excellent resistance to cutting and breaking attempts. With a length of 17.5 cm and a diameter of 13 mm, the lock is large enough to meet various bicycle securing scenarios.

Innovative security technologies

The OnGuard Bulldog Medium 8013M U-Lock is equipped with advanced security technologies. The X2P - Double Bolt technology increases resistance to forced opening attempts, providing a strong lock on both sides of the lock. The Z-Cylinder is a high-quality locking mechanism that protects against manipulation attempts. Additionally, the Steel Ball Combo (SBC) is a system that hinders unauthorized opening, raising the level of user safety.

Functionality and ease of use

The OnGuard Bulldog Medium 8013M U-Lock has been designed with user convenience in mind. The key lock guarantees simplicity and intuitiveness in operation, which is extremely important for daily use. Thanks to its thoughtful design, the lock is easy to transport, and its solid construction does not affect the comfort of carrying.

OnGuard Bulldog Medium 8013M U-Lock - features:

  • Made of hardened steel providing high resistance to cuts;
  • Length of 17.5 cm allowing for wide application in various situations;
  • Diameter of 13 mm increasing the lock's durability;
  • X2P - Double Bolt technology enhancing resistance to forced opening;
  • Z-Cylinder as an advanced locking mechanism;
  • Steel Ball Combo (SBC) making unauthorized opening difficult;
  • Key lock ensuring simplicity of use and security.
X2P - Double Bolt
The X2P Double Bolt is a patented security system that locks both sides of the headband, creating a doubly redundant protection mechanism. This ensures that the design effectively resists attempts to pull, undermine or stretch the lock.
Z-Cylinder
The Z-Cylinder is an advanced protection system against mechanical tampering such as sawing, drilling or undermining. The cylinder design increases the lock's resistance to tampering attempts and provides a higher level of security.
SBC - Steel Ball Combo
The SBC - Steel Ball Combo is an advanced steel ball-based mechanism that ensures the smooth operation of combination locks. This system effectively resists tampering attempts, such as undermining or attempts to open with a pick, guaranteeing exceptional security and reliability of use.
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OnGuard Bulldog Medium 8013M U-Lock bicycle lock

OnGuard Bulldog Medium 8013M U-Lock bicycle lock

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Size 13mm / 90mm / 175mm
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