10 Best chain locks 2025 in the United States

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.

Its lock mechanism is a high-security disc-style cylinder that resists picking and drilling, adding another layer of protection. The chain lock also features a durable rubber coating to prevent scratches and a weather-resistant nylon sleeve to protect against the elements, ensuring longevity even in varying weather conditions. Weighing 1.59kg (3.50 lbs), it is relatively heavy, which adds to the security aspect but might make it less convenient to carry around.

The product comes with two keys and offers a convenient Key Safe Program for key replacement if lost. Kryptonite's optional Anti-Theft Protection and lifetime warranty provide further peace of mind. The primary drawback is the weight and moderate security rating, which might not meet the needs of users in high-crime areas. Given its strengths in durability and security features, it is particularly suitable for users prioritizing strong anti-theft measures and resilience against weather.

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.

Additionally, the lock includes a sliding dustcover to protect the cylinder and extend its life. For added peace of mind, Kryptonite offers a Key Safe Program, which ships your first two keys for free globally if lost, and an optional Anti-Theft Protection Offer (ATPO) covering up to $3,000 for registered locks. The product weighs approximately 6.09 pounds, which might be a bit heavy for some users but ensures durability and robustness. It comes with a lifetime warranty and support from Kryptonite.

This lock might be inconvenient to carry around due to its weight and size. However, for those prioritizing security over portability, this lock is a reliable and high-quality option.

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.

The chain is covered in durable nylon with hook-and-loop fasteners to prevent scratches on your bike and to keep it secure in place. Weighing 15.25 pounds, this lock is quite heavy, which may be a downside for those looking for portability. Additionally, it has a weather-resistant sliding dustcover to protect the cylinder, although it may not be fully waterproof.

The lock comes with three stainless steel keys, including one with a replaceable battery-powered light, which is a convenient feature. This chain lock is ideal for e-bikes, motorcycles, and scooters, particularly in areas with a high risk of theft. Its considerable weight and bulkiness might be a drawback for everyday casual use or for those needing a lightweight option.