Bike Lock MASTERLOCK QUANTUM 8228 — folding lock, black

MASTERLOCK QUANTUM 8228 — folding lock in black is a compact security accessory designed for everyday urban cycling. The lock consists of articulated hardened steel segments that fold together for compact storage and unfold to form a rigid barrier around the bike frame or wheel. It is intended to secure bicycles and other small urban transport by fastening them to fixed objects such as bike racks, poles, or railings.

Advantages

The folding design combines portability and solidity: the articulated steel segments reduce bulk when stored while providing a robust physical barrier when deployed. Hardened steel construction increases resistance to cutting and levering. The compact folded size and a single locking mechanism simplify handling and mounting to the frame or carrying in a bag. The black finish offers a neutral, corrosion-resistant surface for daily outdoor use.

Suitable for

• Securing city and commuter bicycles to bike racks, posts or railings
• Locking wheels and frames during short stops in urban environments
• Everyday use where a compact, transportable lock is needed

Key specifications

• Lock type: folding lock with articulated steel segments
• Material: hardened steel segments for physical protection
• Finish: black protective coating
• Application: designed to secure bike frames and wheels to fixed objects
• Portability: compact folded form for easy storage and transport

How to use

Unfold the lock into its extended form, wrap the articulated segments around the bike frame and a fixed object so that both the frame and, if possible, a wheel are secured. Align the locking ends and engage the lock until it clicks. When not in use fold the segments back together to their compact shape for storage in a bag or mounting bracket. Always choose a fixed object anchored to the ground and avoid attaching the lock to removable or loose fixtures.

Usage recommendations

For effective protection, use the lock in combination with a secondary security device for additional security in high-risk areas, park the bicycle in visible, well-lit locations, and regularly inspect the lock for damage or corrosion to maintain reliable operation.