10 Best Bike Locks 2025 in the United States

The Seatylock FoldyLock Compact is a smart choice for those who want strong security without carrying bulky gear. Its patented folding design uses hardened steel with a tough nylon and glass fiber cover, making it resistant to cutting, drilling, and corrosion. The lock has a high security rating, backed by features like anti-tamper rivets and a multi-locking system that help keep your bike safe from theft. Weighing around 2.2 pounds and compactly folding to just over 7 inches, it’s easy to carry and store, especially with two included silent frame mounts that reduce rattling during rides. The set comes with two identical locks and six matching keys, which is convenient for families or couples. It’s also weatherproof, so rain or snow won’t easily damage it.

That said, while folding locks are great for portability, their length (85 cm circumference) might be tight for securing your bike to larger objects like thick poles. Despite being lightweight and compact, it may feel less bulky and reassuring than a traditional heavy-duty U-lock for some users. Installation is straightforward, but if you’re new to folding locks, getting used to the locking mechanism and key system might take a short adjustment.

This lock is particularly suitable for urban cyclists or e-bike riders looking for a blend of portability and solid protection without the hassle of chains or cables.

The Seatylock FoldyLock Forever set offers two strong folding bike locks with matching keys, making it a great choice for couples or families who want consistent security across multiple bikes. These locks use a patented folding design with hardened steel plates covered by durable nylon and glass fiber casing, which makes them both tough and resistant to cutting or drilling. With a maximum security rating of 18/18 (Sold Secure Gold), they provide high protection against theft, suitable for city and urban cycling where bike security is a top concern.

The dual-lock set also includes mounting cases that easily attach to your bike frame, allowing quiet and convenient transport without rattling during rides. Weighing about 3.87 pounds each and measuring 35.4 inches in circumference, they balance portability and coverage well, although the weight might be noticeable if you prefer very lightweight locks. These locks are also weather resistant and waterproof, so they hold up well in rain or other outdoor conditions without getting rusty or damaged.

The locking mechanism is key-based with six identical keys included, simplifying key management but requiring carrying keys rather than a combination. Installation and use are straightforward, with included mounting hardware and an Allen key for setup. One drawback might be the price point relative to simpler cable or chain locks, but the trade-off is stronger security and durability. For those seeking robust, reliable protection for their bikes and valuing quiet, compact storage, this set is a solid option, especially for individuals needing locks for more than one bike.

The Kryptonite Evolution Mini Bike Chain Lock is a solid choice for those needing a robust and reliable bike lock. Made from 10mm hardened steel, it boasts significant resistance to cutting and leverage attacks, making it highly secure. The patented locking system with a high-security disc-style cylinder adds to its resistance against picking and drilling, providing peace of mind for users.

Additionally, the chain’s weather-resistant nylon sleeve and durable rubber coating protect your bike from scratches and the elements, enhancing its longevity. The sliding dustcover is a thoughtful touch that helps extend the cylinder's life by keeping dirt and debris out. For convenience, Kryptonite offers a Key Safe Program to replace lost keys and an optional Anti-Theft Protection Offer for up to $3,000 coverage.

The lock comes with a limited lifetime warranty, reflecting the manufacturer's confidence in its durability and performance. At 6.09 pounds, it’s relatively heavy, which may be a drawback for those who prefer lighter locks for easier transport. Its length of 3 feet is suitable for most applications, but it may not be sufficient for securing multiple bikes or reaching around larger objects. This bike lock is excellent for securing bicycles, motorcycles, and other valuable items, especially in high-risk areas, but its weight and length might be limiting factors for some users.