DUNLOP Chain Bike Lock with Combination - Black

The DUNLOP Chain Bike Lock with Combination in black is a chain-style bicycle lock designed for everyday urban security. It features a metal chain covered in a protective sleeve and a built-in numeric combination mechanism so no key is required. The lock is intended to wrap around a bike frame and a fixed object, offering a flexible option for securing bicycles, scooters and other outdoor equipment when portability and simple operation are needed.

Advantages

The combination mechanism eliminates the need to carry keys and allows easy sharing of access codes between users. The chain construction provides flexibility to secure the frame and wheel to a range of fixed objects, while the protective sleeve reduces the risk of paint damage. Compact and portable, the lock can be coiled for storage and transport.

Suitable for

• Everyday urban cyclists who need a portable lock for short stops
• Securing scooters, children’s ride-on toys and similar outdoor equipment
• Users preferring a keyless numeric combination lock for shared access
• Situations where a flexible chain can be threaded through frames and around irregular fixed objects

When it may not be suitable

This chain lock is intended for everyday, low- to medium-risk urban use and may not provide sufficient protection in high-theft areas or against determined thieves using heavy cutting tools. It is not a substitute for a hardened U-lock or a high-security chain specifically rated for heavy-duty protection.

Key specifications

• Lock type: Chain with built-in numeric combination mechanism
• Finish: Black protective sleeve over metal chain
• Operation: Keyless numeric code entry
• Portability: Flexible chain design suitable for coiling and storage

How to use

Wrap the chain around the bicycle frame and a solid fixed object such as a bike rack or post, ensuring the chain passes through the frame and at least one wheel where possible. Align the chain ends and set the numeric code to lock; follow the included instructions to change the combination if necessary. Store the lock coiled in a bag or attached to the frame when not in use. Regularly check the combination mechanism and chain sleeve for signs of wear or damage and clean the lock if exposed to mud or salt to maintain function.

What to consider before purchase

• Level of theft risk in your area and whether a higher-security lock is required
• Needed chain length to reach around your frame and typical fixed objects
• Preference for keyless combination versus key-operated locks
• Compatibility with your bike’s mounting and storage habits

Usage recommendations

For best security, thread the chain through both the frame and a wheel and lock to an immovable object. Choose a combination code that is memorable to you but not easily guessed, and periodically test the mechanism to ensure smooth operation. In higher-risk locations consider using this chain lock together with an additional hardened lock for increased protection.