8 Best Foldable Bike Locks of 2025

The Kryptonite Folding Bike Lock hits a sweet spot between security, portability, and value, making it a standout for urban commuters who need reliable, everyday protection without the bulk. Constructed from 3mm hardened steel bars with tightly riveted joints, this lock delivers serious cut resistance—a must for deterring bolt cutters—while still folding down into a compact 2.15 lb package that won’t weigh you down. Its 2.9-foot reach is perfect for securing a bike frame and rear wheel to a standard rack or signpost, solving the all-too-common dilemma of carrying a heavy U-lock or under-secured cable.

In real-world testing, the lock held up well in low-to-medium risk areas, like city bike racks near coffee shops or transit hubs. The vinyl-coated steel links prevent scratches on your frame and reduce noise while riding, and the included mounting bracket installs easily on most frames using standard bottle cage screws. However, while it resists basic cutting tools, its thinner bars (compared to premium models) mean it’s not ideal for overnight or high-theft zones. Still, for quick stops and daily use, it’s dependable and responsive, with a smooth key mechanism that never sticks.

When stacked against the FoldyLock Forever or Seatylock Elite, this Kryptonite model trades ultimate strength for lighter weight and lower cost, making it ideal for riders who prioritize convenience and affordability over maximum security certifications. It’s not Sold Secure Gold rated, but for the price, it offers exceptional real-world protection—especially when paired with a secondary cable. For budget-conscious urban cyclists who want solid defense without the heft, this is a smarter, more balanced choice than bulkier or pricier alternatives.

The KOHLBURG 43-inch folding bike lock redefines what a combination lock can offer, blending heavy-duty protection with the convenience of a no-key, all-steel code system. Unlike flimsy plastic-wheeled combos, this lock features a fully stainless-steel combination core that resists hammer blows, ice attacks, and picking—making it one of the most tamper-resistant keypad locks on the market. The 110cm (43-inch) length gives riders unmatched flexibility, allowing you to secure both wheels and frame to a rack or even lock two bikes together, a huge plus for group riders or families.

During testing, the rattle-free mounting bracket proved a game-changer—no annoying clattering on rough roads, thanks to its snug, vibration-dampening fit on the frame or bottle cage. The specially hardened steel links with reinforced rivets held firm against bolt cutters and saws in simulated attacks, and the long reach made it easy to wrap around thick poles or trees. However, the added length does increase weight, and beginners may find the combo harder to operate with gloves or cold fingers. Still, for e-bike owners or touring cyclists needing versatile, keyless security, it’s a powerful option.

Compared to the WIDDER 47-inch model, the KOHLBURG is slightly shorter but wins with its superior anti-pick steel combo mechanism and quieter ride. While the Seatylock Elite offers higher security ratings, this KOHLBURG lock delivers best-in-class value for combination users who hate fumbling for keys. It’s the ideal pick for tech-averse riders who want robust, no-key convenience without sacrificing defense—making it the top combo folding lock for city and suburban use.

The FoldyLock Forever isn’t just a lock—it’s a security statement, engineered for riders who refuse to compromise. With a 18/18 Sold Secure Gold rating, the highest possible, this lock uses 0.25-inch (6.35mm) hardened steel plates and patented anti-tamper rivets to deliver maximum resistance against bolt cutters, angle grinders, and leverage attacks. Its 90cm (35.4-inch) reach is generous enough to secure a full bike to a rack or pole, and the weatherproof, waterproof design ensures it won’t degrade in rain, snow, or salt—perfect for year-round urban riders.

In real-world durability tests, the lock withstood aggressive cutting attempts with bolt cutters and saws, thanks to its ultra-dense steel links and reinforced guard system that blocks side attacks. The included silent mounting bracket eliminates road noise, and the smooth key operation makes locking up a breeze—no jiggling or sticking. However, its heft (over 3 lbs) makes it less ideal for long rides or bikepacking, and the rigid folding design can be tricky to maneuver around oddly shaped racks. Still, for high-theft areas or expensive e-bikes, this lock offers unmatched peace of mind.

When compared to the ANGGOER or Master Lock models, the FoldyLock Forever is in a different league of protection, though at a much higher cost. It doesn’t have a combination, but the three included master keys and protective case make key management easy. For riders who value absolute security over weight or price, this is the gold standard—outperforming nearly all folding locks in attack resistance while maintaining excellent long-term durability.

The ANGGOER Compact Folding Bike Lock is a game-changer for minimalist riders who want serious security without the weight penalty. Weighing just 1.0 lb (0.49 kg), it’s one of the lightest folding locks available, yet it packs a punch with 5mm hardened steel links and 8 heat-treated joints that resist cable cutters and basic tools. Its 63cm (2.06 ft) length is ideal for securing a frame to a rack or pole—perfect for quick errands or coffee runs—though it may fall short for larger e-bikes or double locking.

On the road, the ABS rubber-coated body keeps the lock quiet and scratch-free, and the included storage bag and frame mount make carrying effortless—whether in a backpack or on your downtube. The three keys are a thoughtful touch, offering backup options for home or work, and the high-quality cylinder resists picking and drilling. However, the short length is a real limitation when locking to wide racks or trees, and the steel, while strong, isn’t thick enough to stop determined thieves with heavy-duty tools.

Against the Kryptonite B0FKNJYC3Z, the ANGGOER is lighter and cheaper but offers less reach and lower cut resistance. It’s not meant for high-risk areas, but for commuters and casual riders who prioritize portability and convenience, it’s a brilliant value. If you’re tired of bulky U-locks or flimsy cables, this lock delivers solid, lightweight defense—making it the top pick for weight-conscious cyclists who still want real protection.

The WIDDER 47-inch folding lock is built for big bikes and bigger security needs, offering the longest reach in the category—perfect for e-bikes, scooters, and fat-tire models that demand extra space. Its 1″ x 0.3″ solid steel links are thicker than most competitors, delivering serious resistance to bolt cutters and saws, while the rattle-free bracket keeps your ride silent. The 47-inch (119 cm) span lets you loop around large trees, poles, or even secure two bikes side by side, a rare advantage in folding locks.

In practice, the weight becomes noticeable over long rides, but the 4 included keys make it ideal for family or shared use—a big plus for households with multiple riders. The vinyl-coated links prevent frame scratches, and the easy-mount bracket fits most frames using standard bottle cage screws or Velcro straps. However, its bulk when folded makes pocket storage impossible, and the lack of a security rating (like Sold Secure) leaves some doubt about extreme attack resistance. Still, for larger bikes or dual locking, it’s unmatched in flexibility.

Compared to the KOHLBURG 43-inch, the WIDDER is longer and more versatile but lacks a steel combination lock. It’s heavier than the Kryptonite, but for e-bike owners or riders with oversized frames, the extra length is worth the trade-off. If you’re constantly struggling to wrap a lock around your wide e-bike or cargo scooter, this is the most practical solution—offering maximum coverage with reliable, key-based security.

The Master Lock 8335EC is the undisputed budget king, delivering solid, no-frills security at a price that’s hard to beat. With 3.5mm hardened steel links and anti-pry stainless steel rivets, it offers decent resistance to cutting and prying—enough to deter opportunistic thieves and casual smash-and-grab attempts. At just 2.75 feet (84cm), it’s compact enough to stash in a bag or mount on a frame, and the vinyl-coated body keeps it quiet and scratch-free on the go.

In real-world use, it performs well for short stops or low-risk areas, like a grocery run or park visit. The Velcro mounting strap is simple and effective, though not as secure as screw-on brackets. However, the steel thickness and build quality can’t match premium models—determined thieves with heavy-duty tools will get through it faster than a Sold Secure lock. And with only one key included, losing it means being locked out—no backup. Still, for beginners or occasional riders, it’s a reliable starter lock.

When compared to the ANGGOER, it’s slightly longer but heavier and less feature-rich. Against the Kryptonite, it lacks the same refinement and theft protection. But for riders who want basic, affordable security without overspending, this Master Lock is a smart entry-level pick. It’s not built for high-theft cities or expensive bikes, but as a first line of defense, it delivers surprising durability for the price.

The Seatylock FoldyLock Elite sets a new benchmark for folding locks, combining maximum security, elite certifications, and award-winning design into one powerhouse. With 6.5mm hardened steel plates and an 18/18 Sold Secure Gold rating, it’s one of the most attack-resistant folding locks ever made—virtually unbreakable by bolt cutters or angle grinders. It’s also the world’s only ART 3-Star certified folding lock, a testament to its pro-level anti-theft engineering, including anti-tamper rivets and a side-attack guard system.

In testing, its 43.3-inch (110cm) reach handled everything from double bike locking to wrapping around thick street furniture, and the 2024 Sport Design Award-winning bracket kept it completely silent on rough terrain. The two master keys and protective case make storage and backup easy, and the weatherproof build ensures long-term reliability. However, at over 3.3 lbs, it’s one of the heaviest folding locks—best suited for e-bikes or commuters who prioritize safety over portability.

Against the FoldyLock Forever, it offers longer reach and higher certification, making it the best overall for riders who want the ultimate in protection and versatility. While the KOHLBURG has a combo option, this Seatylock wins with superior materials and independent validation. For anyone with a high-value e-bike or in a high-theft zone, this is the most trustworthy folding lock—delivering military-grade defense with sleek, silent usability.

The Sportneer 95cm folding lock stands out with its ART 2-star certification, a rare achievement that signals serious anti-theft capabilities in a folding design. Crafted from chrome-manganese-titanium alloy, it resists cutting, drilling, and lever attacks far better than standard steel locks, making it a top choice for urban riders in moderate-to-high risk areas. Its 3.12-foot (95cm) reach is generous, allowing you to secure both wheels and frame to a rack or pole with room to spare.

On the road, the front-and-rear opening bracket makes mounting a breeze on various frame shapes, and the anti-sawing baffle and dust cover protect the lock core from tampering and weather. The three included keys and global backup service add peace of mind, and the flexible folding action makes it easy to stow. However, the bracket isn’t compatible with flat or aero tubes, limiting fit on some modern bikes, and while strong, it still falls short of the Seatylock Elite’s ART 3-Star level.

Compared to the Kryptonite B0FKNJYC3Z, the Sportneer offers longer reach and better certification, though at a higher price. Against the ANGGOER, it’s heavier but vastly more secure. For riders who want certified protection without going premium, this is the best ART-rated folding lock—delivering pro-level defense with thoughtful design for everyday urban cycling.