Cycling Security Chain

Looking for a high-quality, reliable security chain for your bicycle? We’ve designed and manufactured incredible security for your bike, to stay protected from thieves on the go and at home.

Our bicycle security chains are made from tough, hardened steel. Our Guardsman chain is designed to withstand even the most determined thieves with 80% carbon steel alloy chain links and grinder attack resistant. It’s also weatherproof, so you can rest assured that your bike will be well-protected come rain or shine, indoors or outdoors, at home, or on the move. Best of all, our bicycle chains are easy to use, so you can get on with your ride without having to worry about fiddling with complicated locks. Simply loop the chain around your frame and secure it with your chosen padlock – it’s really that simple.


We recommend using our cycling security chains as a bare minimum of your security. Layering multiple products helps give you a stronger line of defence and security against even the most determined thieves.

Give yourself the peace of mind that comes with knowing your bike is safe and secure with the Image4security cycling security chain.


The best type of security chain is one with a link diameter of more than 16mm, as bolt cutters won’t be able to cut through them. The Guardsman 20mm diameter security chain is the strongest on the market, with links made from carbon alloy. A grinder attempting to cut this chain would be heard for quite a distance and the carbide in our chains will begin to disintegrate the grinder blade making the cutting process take a lot longer. An alarmed chain such as the Zovii ZCL10-120 will also emit a 120dB shriek when tampered with – an excellent added deterrent.

A chain is always better security than a cable lock. A cable lock can be cut in seconds whereas a chain will need bolt cutters and a chain with a link diameter of more than 16mm will defy even a pair of bolt cutters.

Depending on the size of the bike and position of the ground anchor, but approximately 1.5-2m in order to pass successfully through the anchor, wheels and frame.

Our security chains are made from carbon alloy making it incredibly hard to grind. The carbon element disintegrates the grinder blade as it rotates and therefore increases the time taken to grind through the link. It also creates a noise that can be heard for some distance.

If your chain has an alarm system, you should check the batteries regularly and inspect the chain for any damage. If it has any damage, such as deformations or cracks, or has had someone attempt to cut it, then it should be replaced.

If your chain link diameter is 16mm or greater, then bolt cutters won’t be able to cut it.

Yes, a bike security chain can be used in any weather, and our chains come in denier cover sleeves to prevent scratches to your bike. The electronic parts in the alarm on the Zovii ZC10-120 is also fully waterproofed and all elements of the lock have been made from anti-rust materials.

shipping Delivery Location



19TH – 27TH NOVEMBER – Motorcycle Live