U-lock ONGUARD PitBull STD X-SERIES 8003 — hardened shackle 14 mm, 115×230 mm, set with 5 coded keys

The ONGUARD PitBull STD X-SERIES 8003 U-lock is a compact, heavy-duty solution for securing bicycles and similar vehicles. It features a 14 mm hardened steel shackle and a rectangular locking span measuring approximately 115 × 230 mm, providing a balance between portability and resistance to cutting and leverage attacks. The lock is supplied with five coded keys to allow easy replacement and shared access among users. Its size and shape make it suitable for mounting on luggage racks or for locking frames and wheels where a robust but not overly bulky lock is required.

Advantages

The hardened 14 mm shackle increases resistance to bolt cutters and common hand tools while the rectangular design optimizes clearance and secure contact with frame tubes. Inclusion of five coded keys simplifies key management for families or groups and reduces downtime if a key is lost. The compact dimensions improve portability and storage, and the lock’s construction is intended for regular outdoor use.

Suitable for

• Securing bicycles in urban environments
• Locking a bike frame to racks, posts or fixed anchors
• Protecting wheels and smaller electric scooters or similar small vehicles
• Shared use scenarios where multiple keys are needed

Key specifications

• Shackle material: hardened steel, 14 mm diameter
• Locking span (approx.): 115 × 230 mm (rectangular)
• Access: keyed lock with five coded keys included
• Suitable use: outdoor bicycle and small vehicle security

How to use

Position the shackle around the bicycle frame and a fixed anchor point such as a rack or post, or use it to secure the frame and wheel together. Insert the shackle into the lock body and turn the key to engage the mechanism. Verify that the shackle is fully seated and the lock is engaged before leaving the bicycle. Keep the keys in a secure place and carry a spare key if you anticipate shared use.

Usage recommendations

Choose a visible, well-lit location for parking and combine the U-lock with a secondary cable or chain to secure accessories or additional wheels. Regularly lubricate the keyway and inspect the shackle and lock body for wear; replace if significant damage is found. Store spare keys separately from the primary key to reduce the risk of total key loss.