Best Security Chains : Heavy-Duty Chains for Home, Garage, Motorcycle and Property Security

Best Security Chains at a Glance

1. ABUS 12KS — Best Overall Security Chain

The ABUS 12KS is our top choice for homeowners who want a serious standalone security chain rather than a lightweight bicycle chain.

ABUS describes the 12KS as a high-security chain made from special hardened steel. The manufacturer also offers a fabric sleeve to help prevent scratches to painted surfaces and chrome. The 12KS is available in loop configurations and can also be supplied in customized lengths. 2

This makes it particularly useful for securing gates, outdoor equipment, motorcycles, ladders, machinery and other property where flexibility is important.

Pros

• Hardened-steel construction
• Square-link design
• High resistance to aggressive attacks
• Protective fabric sleeve
• Available in different lengths
• Can be paired with a separate high-security padlock

Cons

• Heavy compared with ordinary chains
• More expensive than standard steel chain
• Requires a separate padlock

Best for: Gates, garages, motorcycles, generators, outdoor equipment and general high-security residential use.

2. ABUS 14KS — Best for Maximum Chain Security

If security is more important than portability, the ABUS 14KS is the type of chain to consider.

The larger cross-section provides more material for an attacker to cut through. ABUS lists the 14KS among its maximum-security square-link chains. 3

The trade-off is substantial weight. A chain this large is better suited to fixed security applications than something you need to carry around every day.

Best for: High-value equipment, motorcycles, gates, construction equipment and long-term outdoor security.

3. ABUS 10KS — Best Balance of Security and Weight

The ABUS 10KS occupies a useful middle ground between portability and maximum chain strength.

It uses hardened-steel square links and is available with a protective sleeve. ABUS positions its KS series as high-security chains intended to withstand aggressive attacks. 4

For homeowners who find a 12KS or 14KS unnecessarily heavy, the 10KS can be a more practical choice.

Best for: Garage doors, gates, motorcycles, bicycles, generators and medium-to-high-value equipment.

4. ABUS 8KS — Best Portable High-Security Chain

The ABUS 8KS is a good option when you need meaningful security without carrying the weight of a very large chain.

It uses hardened steel and square-shaped links. ABUS describes the chain as a high-security product intended to provide strong resistance against aggressive attacks. 5

For bicycles, motorcycles and portable equipment, the lower weight can make a substantial practical difference.

Best for: Portable equipment, bicycles, motorcycles and applications where weight matters.

5. Pewag Security Chain — Best Heavy-Duty Standalone Chain

Pewag security chains are designed for applications where resistance to cutting is a major priority. Pewag chains are available in square hardened-steel configurations, including larger sizes intended for serious security applications. 6

One published comparison reported a hardness of approximately 63 HRC for a Pewag security chain and found the tested 1/2-inch Pewag chain highly resistant to cutting. However, real-world attack resistance varies with the exact chain, tools and circumstances, so controlled cutting-test times should not be treated as universal performance ratings. 7

Best for: Heavy equipment, commercial property, gates, motorcycles and fixed security applications.

6. Kryptonite New York Fahgettaboudit Chain — Best Chain Lock for Motorcycles

The Kryptonite New York Fahgettaboudit Chain is different from a standalone security chain because it combines a heavy-duty chain with an integrated high-security lock.

The 1415 version uses 14mm six-sided hardened manganese-steel links. NBC Select lists it among the strongest bike-lock options it tested and notes that its substantial weight makes it better suited to long-term or overnight security than carrying around all day. 8

RevZilla also identifies the New York Fahgettaboudit Chain as its best overall motorcycle chain lock, highlighting the 14mm hardened manganese-steel links and tamper-resistant lock. 9

Best for: Motorcycles, high-value bicycles, e-bikes and long-term outdoor locking.

Security Chain Comparison

Why Hardened Square-Link Chains Are Better

Not all steel chains provide the same level of security.

Ordinary hardware-store chains are generally designed for pulling, towing, hanging or general utility applications rather than resisting deliberate attacks. A dedicated security chain is manufactured with properties intended to make cutting and other attacks more difficult.

Square or specially shaped links can also make attacks with bolt cutters more difficult because they provide less favorable geometry for the jaws of the cutter.

A published comparison of security chains found that larger square-link hardened chains substantially outperformed a conventional round chain in its controlled cutting tests. 10

What Makes a Security Chain High Security?

1. Hardened Steel

Hardening increases resistance to cutting and deformation compared with ordinary mild-steel chain.

2. Larger Link Diameter

Generally, a thicker link means more material must be removed before the chain can be defeated. The trade-off is increased weight and cost.

3. Square or Six-Sided Links

Specially shaped links can make it harder to position cutting tools effectively.

4. High-Quality Padlock

The chain is only one part of the system. A strong chain paired with a weak padlock can still create an obvious point of attack.

5. Protected Locking Area

A chain should ideally be used with a padlock that provides limited access to the shackle and locking mechanism.

Security Chain Size Guide

These categories are general guidelines rather than universal security ratings. Steel hardness, link geometry, manufacturing quality and the locking system also affect resistance.

Best Security Chains for Gates

For a residential gate, an ABUS 10KS or 12KS paired with a high-security padlock is an excellent configuration.

The chain should pass through the gate and a fixed structural anchor whenever possible. Avoid simply wrapping the chain around a thin decorative component that can be removed or broken.

Best Security Chains for Garage Doors

A security chain can provide an additional layer of protection for certain garage configurations, particularly detached garages, sheds and gates.

However, the chain should not interfere with the normal operation of an automatic garage door or create a hazard. For an overhead door, use a security method specifically designed for that door type.

Best Security Chains for Motorcycles

Motorcycles benefit from thick hardened chains because their large size and weight make portability less important than resistance to attacks.

The Kryptonite New York Fahgettaboudit Chain is particularly suitable when maximum chain-lock security is more important than carrying weight. NBC Select lists the 1415 version at 15.25 pounds, illustrating why it is better suited to stationary or overnight use. 11

Best Security Chains for Bicycles and E-Bikes

For bicycles, weight becomes much more important.

A huge 14mm chain may provide excellent security but can be impractical to carry. A smaller hardened chain can provide a better compromise for everyday use.

For extremely valuable e-bikes, however, the extra weight of a heavy chain can be worthwhile for overnight or high-risk parking.

Best Security Chains for Generators

Portable generators are common targets for theft because they can be valuable and relatively easy to move.

A heavy-duty chain can be used to connect the generator to a fixed structural anchor. Choose a chain that is difficult to cut and pair it with a high-security padlock.

The anchor is just as important as the chain. A thief should not be able to remove the chain by simply unscrewing or dismantling the object to which it is attached.

Best Security Chains for Sheds

For a shed, consider using a hardened chain together with a protected shackle padlock. The chain should connect the shed’s security point to a structural anchor where possible.

If the shed door itself is weak, reinforce the hasp and door before investing in an extremely expensive chain.

Security Chain vs Cable Lock

Security Chain vs U-Lock

How to Choose the Right Security Chain

1. Determine what you are protecting. A bicycle needs a different chain from a generator or construction machine.
2. Estimate the value of the property. Higher-value equipment generally justifies a stronger chain.
3. Choose the appropriate thickness. Larger chains generally provide greater resistance but weigh more.
4. Look for hardened steel. Avoid ordinary utility chain when theft resistance is the objective.
5. Prefer square or specialized links. They can make cutting more difficult.
6. Choose the correct length. Excessively long chains add weight without necessarily improving security.
7. Buy a matching high-security padlock.
8. Secure the chain to a strong anchor.

How Long Should a Security Chain Be?

Use the shortest chain that comfortably reaches the object and anchor.

A chain that is unnecessarily long is heavier, more expensive and may provide an attacker with more room to position tools.

For a motorcycle or bicycle, measure the distance around the frame, wheel or designated locking point and the fixed anchor. For gates and equipment, measure the actual path the chain needs to follow before purchasing.

How to Secure a Chain Properly

1. Choose a solid fixed anchor.
2. Pass the chain through the protected object.
3. Keep the chain as tight as practical.
4. Keep the chain off the ground when possible.
5. Position the padlock where access to the shackle is minimized.
6. Avoid leaving excess chain hanging loose.
7. Inspect the chain periodically for corrosion or damage.

Why Keeping the Chain Off the Ground Helps

Keeping a security chain elevated can make it harder for an attacker to brace the chain against the ground while applying cutting tools.

This is not a guarantee against cutting, but it is a useful part of good chain-locking technique.

Security Chain and Padlock Combination

The strongest chain in the world is not useful if the padlock is substantially weaker than the chain.

Can Security Chains Be Cut?

Yes. No conventional security chain should be described as completely uncuttable.

Even extremely strong chains can eventually be defeated with sufficiently powerful tools. The purpose of a high-security chain is to increase the time, effort, noise and equipment required to defeat it.

Controlled testing has demonstrated substantial differences between ordinary chains and hardened security chains, but those tests should not be interpreted as guarantees of real-world resistance. 12

Common Security Chain Mistakes

Using a Standard Hardware-Store Chain

A decorative or utility chain may look strong but can be substantially easier to cut than a purpose-built hardened security chain.

Using a Weak Padlock

The lock should have security characteristics appropriate to the chain.

Choosing Too Thin a Chain

Thin chains are convenient but generally provide less resistance to cutting.

Choosing an Extremely Heavy Chain for Everyday Carry

Maximum security is not always practical. For bicycles and portable equipment, weight can make a huge difference.

Using a Weak Anchor

The anchor can become the easiest point of attack. Always secure the chain to a genuinely structural object.

How Much Does a Security Chain Cost?

Actual prices vary by chain thickness, length, manufacturer and whether a padlock is included.

Frequently Asked Questions

What is the best security chain?

For a standalone residential security chain, the ABUS 12KS is an excellent overall choice. For maximum chain thickness, the ABUS 14KS is a stronger but heavier option. For motorcycles and bicycles, the Kryptonite New York Fahgettaboudit Chain is a particularly strong integrated chain-lock system.

What is the strongest type of security chain?

Large-diameter hardened-steel chains with specialized square or six-sided links are among the strongest conventional chain options. Larger chains are generally more resistant to cutting but substantially heavier.

Are square security chains better than round chains?

Generally, yes, when comparing purpose-built security chains. Square or specialized link geometry can make cutting tools harder to position effectively, while hardened steel provides additional resistance.

What size security chain should I buy?

For general residential security, an approximately 8–12mm hardened chain can be a useful range. For maximum-security applications, larger 12–14mm or thicker chains may be appropriate.

Is a security chain better than a cable?

For high-security applications, a hardened security chain is generally preferable to a basic cable because it can provide substantially greater resistance to cutting. The trade-off is increased weight.

Can I use a security chain to lock a motorcycle?

Yes. A thick hardened chain paired with a high-security lock is one of the common ways to secure a motorcycle to a suitable fixed anchor.

Should I buy a chain with a lock or buy them separately?

An integrated chain lock is convenient and guarantees compatibility between the chain and lock. Buying them separately gives you more flexibility to select a particularly strong padlock and customize the chain length.

Does a thicker chain always mean better security?

Not necessarily. Thickness is important, but steel hardness, link shape, manufacturing quality and the padlock also matter. A purpose-built hardened square-link chain can outperform an ordinary chain of similar size.

Final Verdict

For most homeowners, the ABUS 10KS or 12KS offers the best combination of security and practicality. If the goal is maximum resistance and weight is not a concern, stepping up to a 14KS-class chain makes sense. For motorcycles and bicycles, an integrated chain lock such as the Kryptonite New York Fahgettaboudit can simplify the setup.

Most importantly, do not evaluate the chain in isolation. A high-security chain should be paired with a high-security padlock and a strong structural anchor. The complete system is only as strong as its weakest component.