U-lock bike lock ONGUARD Bulldog Mini LS 8014 — 13 mm shackle, 90 mm internal width, 240 mm height, 5 coded keys

Foldable-style U-lock ONGUARD Bulldog Mini LS 8014 is a compact bicycle security device designed for everyday urban use. The lock features a 13 mm hardened steel shackle with a 90 mm internal width and 240 mm height, and it is supplied with five coded keys. Its dimensions and construction make it suitable for securing bicycle frames and wheels to fixed objects during short- to medium-duration parking in city environments.

Advantages

The 13 mm hardened steel shackle provides abrasion and cut resistance while keeping the lock compact and portable. The foldable U-lock design balances rigidity and convenience, allowing easy storage on the bike or in a bag. Five coded keys are included to reduce the risk of key loss and to provide spare access options. The internal dimensions offer compatibility with common frame tubes and many urban racks without excessive bulk.

Suitable for

• Securing bicycle frames and wheels to city bike racks
• Short- to medium-duration parking in urban areas
• Commuting where a compact, robust lock is preferred
• Use on scooters and kids’ ride-on vehicles requiring frame protection

Key specifications

• Shackle material: hardened steel
• Shackle diameter: 13 mm
• Internal width: 90 mm
• Height: 240 mm
• Lock type: foldable U-lock style
• Keys supplied: five coded keys

How to use

Position the shackle around the bicycle frame and a fixed object such as a rack or post, ensuring the shackle passes through or around the frame and, where possible, a wheel. Close the lock by inserting the shackle into the locking body until it clicks, then verify the mechanism is fully engaged. Use one of the coded keys to lock and unlock; keep spare keys in a safe place. Store the lock in a frame mount, on a carrier, or in a bag when not in use.

Usage recommendations

For best results, lock the bike through the frame and one wheel, and park in well-lit, busy areas. Regularly inspect the shackle and locking mechanism for wear or damage and avoid exposing the lock to prolonged moisture to maintain function. Keep spare keys separate from the main key to prevent being locked out.