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 Seatylock FoldyLock Elite is a high-security folding bike lock that offers solid protection for bike owners who want strong theft defense without the bulk of chains or cables. Its patented folding design uses hardened steel plates covered with tough nylon and glass fibers, making it resistant to cutting, drilling, and impact. With a Sold Secure Gold rating and an impressive 18/18 security level, it’s among the most secure folding locks available, ideal for urban cyclists and electric bike owners who need top-notch security.

It stretches to 43.3 inches around, which is a good length for locking to various fixed objects, and folds compactly for easy carrying. The lock includes a mounting bracket that keeps it quiet and stable during rides, a nice touch for comfort. Weather resistance is excellent, thanks to sealed anti-corrosion materials, so it holds up well outdoors in different conditions. On the downside, it weighs around 4.18 pounds (1.9 kg), which is heavier than lighter cable locks, so it adds some weight to your gear.

Also, while folding locks are flexible, they may not be as long or flexible as some chains for securing multiple bikes or awkward shapes. The key mechanism is straightforward and comes with three keys plus a duplication card, but if you prefer combination locks, this is not the best fit. Installation and daily use are quite user-friendly, and the included accessories make mounting easy. If you want a very sturdy, well-made folding lock that offers excellent security and durability with weather protection, the Seatylock FoldyLock Elite is a strong contender, especially for riders prioritizing protection over minimal weight.