Sold Secure Diamond bike locks provide the highest level of tested bicycle security. They are designed for high-value bikes and e-bikes, regular city parking and other higher-risk situations where resistance to determined theft matters more than keeping weight and cost to a minimum.
Why Choose a Sold Secure Diamond Bike Lock?
Diamond-rated locks are tested against a specialist tool list and demanding attack methods. The category includes robust D-locks, heavy-duty chains and secure anchoring products. They are a strong choice for longer unattended periods, valuable bikes and policies that require the highest bicycle-security rating, although you should always check your insurer's exact conditions.
What to Look for in a Diamond Bike Lock
- Lock type: Choose a D-lock for strong portable protection, a chain for greater reach, or an anchor-based setup for security at home.
- Size and fit: Make sure the lock reaches around your frame and usual locking point without leaving unnecessary space for tools.
- Weight and carrying: Diamond protection can be substantial, so check the weight, dimensions and frame-mounting or carrying options.
- Complete setup: Secure the frame to an immovable object and consider a second lock for the wheels in higher-risk locations.
Certification applies to the specific product tested; an extension cable supplied with a lock may not share its Diamond rating. Compare lock types and correct locking technique in our Bike Lock Buyer's Guide.