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10 Best chain locks 2025 in the United States

#1

Winner

9.8 score

Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence

Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence

Kryptonite

9.8 score

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The Kryptonite Keeper 785 Bike Chain Lock is designed for those seeking reliable security for their bike, motorcycle, scooter, door, gate, or fence. Key features include a heavy-duty chain made from 7mm hardened steel which is highly resistant to cutting and leverage attacks, making it a strong choice for security. The chain is 85cm (33.5 inches) long, which should offer flexibility in securing various items.

Rating
9.8
Chosen by1,449
Length
Lock Mechanism
Weight

Most important from
7147 reviews

Length
The length of the chain gives some limitations when trying to lock it around more secure areas.
Lock Mechanism
Comes with a spare key and is relatively light for a metal chain.
Weight
The lock isn’t the most portable compared to a U-Lock, requiring a backpack or bag for transport.
#2
9.6 score

Kryptonite Evolution Mini Bike Chain Lock, 3 Feet Long 10mm Steel Chain Heavy Duty Anti-Theft Sold Secure Gold Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence

Kryptonite Evolution Mini Bike Chain Lock, 3 Feet Long 10mm Steel Chain Heavy Duty Anti-Theft Sold Secure Gold Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence

Kryptonite

9.6 score

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The Kryptonite Evolution Mini Bike Chain Lock is a solid choice for securing your bike, motorcycle, scooter, door, gate, or fence. This lock features a 3 feet long chain constructed of 10mm hardened steel with six-sided links, making it highly resistant to cutting and leverage attacks. It includes a patented locking system with a reinforced oval crossbar and a high-security disc-style cylinder, which makes it resistant to picking and drilling. The chain is connected to a hardened deadbolt, eliminating weak points and enhancing security. The durable rubber coating around the chain helps prevent scratching your bike, and a weather-resistant nylon sleeve protects against wear and tear while preventing scratches.

Rating
9.6
Chain Thickness
Length
Weight

Most important from
4828 reviews

Chain Thickness
The chain is much thicker and the lock has a much better shackle/locking lug compared to cheaper models.
Length
The lock isn't super long, so it only really works on one bike and fits bike racks or thinner objects.
Weight
The lock is significantly heavy, adding an extra burden during rides.
#3
9.5 score

Kryptonite New York FAHGETTABOUDIT 1410 Bike Chain Lock, 3.28 Feet Long 14mm Steel Chain Heavy Duty Anti-Theft Bicycle Chain Lock with Keys, 10/10 Security Rating for E-Bike, Motorcycle, Scooter

31%OFF

Kryptonite New York FAHGETTABOUDIT 1410 Bike Chain Lock, 3.28 Feet Long 14mm Steel Chain Heavy Duty Anti-Theft Bicycle Chain Lock with Keys, 10/10 Security Rating for E-Bike, Motorcycle, Scooter

Kryptonite

9.5 score

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The Kryptonite New York FAHGETTABOUDIT 1410 Bike Chain Lock is a robust and reliable security solution for high-theft areas. It features 14mm hexagonal chain links made from triple heat-treated boron manganese steel, ensuring maximum strength and resistance to cutting and leverage attacks. The lock mechanism includes a New York disc lock with a 15mm hardened steel shackle, providing a high level of security with its hardened double deadbolt locking system and reinforced anti-drill, anti-pull protection.

Rating
9.5
Chain Thickness
Length
Lock Mechanism

Most important from
1821 reviews

Chain Thickness
It's not particularly long so you need to be very close to whatever you're locking to, and the chain links are so big that they will not fit through most spokes.
Length
It's not particularly long so you need to be very close to whatever you're locking to, and the chain links are so big that they will not fit through most spokes.
Lock Mechanism
Heavy duty and reliable, but it is honestly not an easy lock to operate.
Weight
At 71 years old and 4'11", I can handle it without difficulty. I store it in the pannier bags on my rear rack.

Top 10 Best chain locks 2025 in the United States

Sponsored

Slide 1

Seatylock

FoldyLock Compact Folding Bike Lock - Award Winning Patented Lightweight High Security Bicycle Lock - Heavy Duty Anti Theft Smart Secure Guard with Key and Case for Bikes or Scooter - 85 cm

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#1

Winner

9.8  score
Slide 1Slide 2Slide 3Slide 4Slide 5

Kryptonite

Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence

Material: 7mm hardened steel
Chain Thickness: 7mm
Length: 85cm
Lock Mechanism: high-security disc cylinder
Weight: 1.59kg
Weather Resistance: nylon sleeve

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Chosen by 1449 this week

Sponsored

Slide 1

Seatylock

FoldyLock Compact Folding Bike Lock - Award Winning Patented Lightweight High Security Bicycle Lock - Heavy Duty Anti Theft Smart Secure Guard with Key and Case for Bikes or Scooter - 85 cm

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#2
9.6  score
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Kryptonite

Kryptonite Evolution Mini Bike Chain Lock, 3 Feet Long 10mm Steel Chain Heavy Duty Anti-Theft Sold Secure Gold Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence

Material: 10mm hardened steel
Chain Thickness: 10mm
Length: 3 feet
Lock Mechanism: high-security disc cylinder
Weight: 6.09 pounds
Weather Resistance: weather-resistant sleeve

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#3
9.5  score
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Kryptonite

Kryptonite New York FAHGETTABOUDIT 1410 Bike Chain Lock, 3.28 Feet Long 14mm Steel Chain Heavy Duty Anti-Theft Bicycle Chain Lock with Keys, 10/10 Security Rating for E-Bike, Motorcycle, Scooter

Material: Boron Manganese Steel
Chain Thickness: 14mm
Length: 39.37 inches
Lock Mechanism: New York disc lock, 15mm shackle
Weight: 15.25 pounds
Weather Resistance: Weather-resistant dustcover

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31% OFF
#4
9.3  score
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Kryptonite

Kryptonite Keeper 712 Combo Bike Chain Lock, 4 Feet Long 7mm Steel Chain Heavy Duty Anti-Theft Bicycle Chain Lock, 4-Digit Resettable Combination Lock for E-Bike Scooter Road Mountain Bikes

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#5
9.0  score
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ABUS

ABUS Hardened Steel 8KS 10 Foot x 5/16" Thick Square Security Chain for Bikes, Containers, Trailers, ATV, Motorcycles and Personal/Industrial Property

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#6
8.8  score
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Kryptonite

Kryptonite Keeper 790 Combo Bike Chain Lock, 3 Feet Long Heavy Duty Anti-Theft Sold Secure Gold Bicycle Chain Lock, 4-Digit Resettable Combination Lock for E-Bike Scooter Road Mountain Bikes,Black

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#7
8.5  score
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ONGUARD

OnGuard 8020 Mastiff Integrated Key Chain Lock - 3.57' X 0.39"[110CM X 10MM] Black

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#8
8.2  score
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Kryptonite

Kryptonite New York 1275 Cinch Ring Bike Chain Lock, 2.5 Feet Long Heavy Duty Anti-Theft Sold Secure Gold Bicycle Chain Lock with Evolution Disc Lock and Keys for E-Bike, Motorcycle, Scooter

Material: Alloy Steel
Chain Thickness: 12mm
Length: 2.5 feet
Lock Mechanism: Heavy-duty disc lock, double deadbolt
Weight: 6.95 pounds
Weather Resistance: Sliding dust cover

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#9
8.0  score
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Hiplok

Hiplok Gold Wearable Chain Bicycle Lock

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20% OFF
#10
7.7  score
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ABUS

Abus Granit Citychain X-Plus 1060 Chain Bicycle Lock (4.5-Feet)

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Buying Guide for the Best chain locks

Choosing the right chain lock is crucial for ensuring the security of your bicycle or other valuable items. Chain locks are known for their durability and resistance to cutting, making them a popular choice among cyclists and those looking to secure their belongings. When selecting a chain lock, it's important to consider several key specifications to ensure you get the best fit for your needs. Here are the main specs to look at and how to navigate them.
MaterialThe material of the chain lock is important because it determines the lock's strength and resistance to cutting or breaking. Common materials include hardened steel, titanium, and alloy steel. Hardened steel is very strong and resistant to cutting, making it a good choice for high-security needs. Titanium is lighter but still offers good security. Alloy steel is a balance between strength and weight. Choose a material based on the level of security you need and how much weight you are willing to carry.
Chain ThicknessChain thickness refers to the diameter of the links in the chain. Thicker chains are harder to cut and provide better security. Chain thickness typically ranges from 6mm to 12mm or more. For high-security needs, opt for a chain thickness of 10mm or more. If you need a lighter lock for casual use, a thickness of 6mm to 8mm may suffice. Consider the level of security you need and the weight you are comfortable carrying.
LengthThe length of the chain lock determines how easily you can secure your bike or other items to a fixed object. Chain locks come in various lengths, typically ranging from 60cm to 150cm or more. Longer chains offer more flexibility in securing your bike to different objects but can be heavier and bulkier. Shorter chains are lighter and easier to carry but may limit your options for securing your bike. Choose a length based on where you plan to lock your bike and how portable you need the lock to be.
Lock MechanismThe lock mechanism is the part of the chain lock that secures the chain and prevents it from being opened without the key or combination. Common lock mechanisms include keyed locks and combination locks. Keyed locks offer high security but require you to carry a key. Combination locks are convenient as they don't require a key, but they may be less secure than keyed locks. Choose a lock mechanism based on your preference for convenience versus security.
WeightThe weight of the chain lock is important because it affects how easy it is to carry the lock with you. Heavier locks generally offer better security but can be cumbersome to transport. Lighter locks are easier to carry but may not provide the same level of security. Consider how often you will need to carry the lock and balance the need for security with the convenience of a lighter lock.
Weather ResistanceWeather resistance refers to the lock's ability to withstand exposure to the elements without rusting or deteriorating. Look for chain locks with weather-resistant coatings or materials that can handle rain, snow, and other harsh conditions. This is especially important if you plan to leave your bike locked outside frequently. Choose a lock with good weather resistance to ensure it remains functional and secure over time.

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