Best Key Bike U Locks in 2026

14mm hardened MAX-Performance steel shackle resists both cutters and leverage attacks

Double deadbolt locking mechanism has extensive holding power

High security, disc-style cylinder with reinforced anti-drill, anti-pull protection system

【Premium Heavy Duty Bike Lock】 This bike D lock comes with a 0.86 inch heavy duty shackle and has excellent heat resistant and hydraulic shear resistant. Equipped with a 0.10 inch silicone cover, it can prevents scratch well and provides excellent safety protection for your bicycle.

【Security and Anti-theft】The bicycle lock is built-in imported c grade pure copper look cylinder, which is certified to resist leverage attacks and provides excellent anti-theft performance, so that your bicycle can be protected with the best safety.

【Easy to Install and Use】The combination bike lock is equipped with a 0.45 inch diameter thick steel cable with a length of 4ft and a high-quality mounting bracket, allowing you to easily install and use it without additional tools. It is very user-friendly.

FOR ALL YOUR SECURITY NEEDS ▶ This Bike U-lock meets all your security needs: a Heavy Duty 16mm U-lock that is Durable and Easy to Use plus a 1800mm Cable that gives you solid security on every location. Enjoy your bike rides knowing your bike is secure!

SECURE AGAINST ATTACKS ▶ This Bike U lock is made of 16MM Hardened Steel and with the extra 1800 mm Flex Cable this U lock protects your bike securely wherever you go. Thieves will think twice with this lock and choose the next bike, you are secure!

EASY TO USE AND DURABLE ▶ Locking this U-lock is like a walk in the park: it opens and locks easily, has a smooth keyhole-cover and a cable that stores conveniently with the Velcro Strap. With this lock you will enjoy easy-locking season after season.

Product 1: Outdoor heavy duty bike U-lock is best used as a bicycle lock

Product 1: U-shaped steel bike lock with key; Includes carrier bracket for easy transportation

Product 1: Bike lock features a hardened steel body and double locking shackle for superior cutting and prying resistance

【Double-opening Head】Our DINOKA heavy duty bicycle u lock is a double-opening head, The thief needs to break the bike locks on both sides at the same time to open it, which is safer than a single-opening head ulock. The lock cylinder of the bicycle is made of C-grade pure copper blades and has a precise structure to prevent various technologies from opening. In addition, the bike u lock is equipped with 2 rust-proof copper keys with a complex snake-shaped slot, which is safer to use.

【Sturdy and Durable】This bicycle lock is made of 16mm/0.63 inch (including 0.1 inches friendly silicone sleeve) hardened high-performance alloy steel, which can resist cutting and lever attacks. Our bike d lock will provide more security for your bike.

【Convenient to Lock】The bike u-lock heavy-duty comes with 4 feet/0.48in steel cable which is coated with PVC covering to provide a greater locking method to protect your bike, suitable for bicycles, motorcycles, electric bike, scooters.

OnGuard U-Lock PITBULL Series

PitBull Double-Team Standard U-Lock is double-teamed with 4 foot fully coated, braided steel cable allows user to leave front wheel on bike and extra locking versatility.

X4P locking mechanism offers superior protection.

Robust and pick-resistant: U-lock with ABUS XPlus cylinder to protect against tampering such as picking, lock and unlock with key

For maximum safety: Bicycle lock with hardened 13 mm square parabolic shackle: Housing, shackle and supporting parts of the locking mechanism are made of specially hardened steel

Power cell technology: The lock offers a high level of theft protection against blows and attacks

【KEYS-FREE】Bike lock combination for security of your, motorcycle, electric scooter, gate. No more worry for forgetting keys with scooter lock with combination.

【COMBINATION】A strong motorcycle lock with easily setup to your own 4 numbers by the fist use. Smooth dials turning gives you confidence for quality.

【STRONG SHACKLE】The bike locks heavy duty anti theft 10 mm hardened zinc alloy shackle resists both cutters and leverage attacks. 4mm PVC coating paddle lock protects the lock from any scratching. Good gate locks for metal fence.

KEYS-FREE: No need any key to secure your, motorcycle, e-scooter, gate. No more worry for forgetting keys.

STRONG SHACKLE: The 14 mm hardened zinc alloy shackle resists both cutters and leverage attacks. 4mm PVC coating protects the lock from any scratching.

COMBINATION: Easily set your own 5 numbers by the fist use. Smooth dials turning gives you confidence for quality.

🔒【𝟮𝟬𝟮𝟮 𝗧𝗼𝘂𝗴𝗵𝗲𝘀𝘁 𝗟𝗼𝗰𝗸】Abandon the bicycle lock on the market with small size and thin inner material shortcomings, we designed this NEWEST bicycle u lock. Stronger Heavy Duty Anti Theft Bike Lock（2.6lb/1.2kg). No one will be able to cut this lock. Max 25mm hardened steel shackle while minimum 18.76mm u lock for scooter (14.73 mm carbon steel alloy). which is built to withstand attack from bolt cutters and leverage attacks. NOTICE: NO bracket available

🔒【𝗗𝗼𝘂𝗯𝗹𝗲 𝗕𝗼𝗹𝘁 𝗠𝗲𝗰𝗵𝗮𝗻𝗶𝘀𝗺】Our u lock for bicycle has a double opening head, the thief needs to pry both sides at the same time to open it. Top bike u lock directly into a crossbar with a dual locking mechanism, providing resistance to prying, pulling and jacking. Scooter locks sophisticated double locking systems, which are less likely to be broken than their cheap counterparts

🔒【𝗦𝗶𝗹𝗶𝗰𝗼𝗻𝗲 𝗥𝘂𝗯𝗯𝗲𝗿 𝗖𝗼𝗮𝘁】Anti-theft bike U-lock is fully covered by a 4-11MM premium silicone coating thickness, ensuring that your beloved bicycle will not be scratched when in use. Bicycle d lock weather protection mechanism that keeps the lock in good working order by preventing rust even when it rains a lot. Prolonging the service life of this anti theft bicycle lock. Suitable for bicycles, motorcycles, electric bikes, scooters

LIGHTEST DIAMOND SOLD SECURE U LOCK FOR ITS SIZE - Best Lightweight Portable & Solid Professional Lock - No Code or Chain. Perfect for Outdoor & Urban Cycling. Bolt Cutter Drill Pick & Saw Proof Hard Bikelock

PATENT ULTRA STRENGTH HEAVY DUTY ANTI THEFT TECHNOLOGY - Anti Cut Durable Waterproof Weatherproof Bicycle Protector with Antitheft Triangle Shaped Crossbars. Strongly Tested Guard System Stops Thief Attacks

RELIABLE HIGH PERFORMANCE PROTECTION - SeatyLock Pro Break Resistant Thief Deterrent. Compact & Easy Carry Bike Accessory. Rust Prevention Coating & Components for Dependable & Quality Safety

More Convenient U-LOCK - From the makers of OTTOLOCK, the SIDEKICK brings innovation to the traditional U-Lock with a compact, lightweight design that effectively deters opportunity theft without weighing you down. Simple to use and to carry, the portable SIDEKICK easily fits in many backpacks, bags, or pockets.

Lightweight Bike Lock - At only 750 grams (1.65 lbs), the SIDEKICK allows you to lock a single tube to a post or pole at a fraction of the weight of a traditional U-Lock. The opening measures 2.75” x 5.75” (7cm x 14.5cm). Each lock comes with 3 keys

Protect Your Frame - The body of the SIDEKICK is coated in high quality silicone that won’t scratch or damage your bike frame. Made with double-shackle 12mm hardened steel and an antirotation deadbolt for security and durability.

✔️ DURABLE ALL-WEATHER PROTECTION – Via Velo bike U-lock with hexagonal PVC cover resists corrosion from water, dust and dirt to prolong the life of your lock. All-weather performance means peace of mind and better security

✔️Family Lock SET 4 Sets – This set comes with (1) 2 Set of 14mm,9.84 in (250mm) x 5.51 in (140mm) U shack to lock and go! Locking your bike and your wheels with 10mm x 180cm cable, fast and easy with our quick. (2) 4 keys same keyed alike

✔️ AMAZING CONVENIENCE AND SECURITY – 8 keys for convenience! The bike U-locks comes with 8 keys. One of them you can take and use in daily life and the other you can leave at home in case the trouble when you lose one carelessly

Long-shackle Bulldog U-Lock

X2P Double Bolt Locking Mechanism offers best-in-class protection

Long shackle provides more locking options; Weighs: 3 pounds

【STURDY & DURABLE】KASTEWILL bike U lock is made of environmentally friendly silicone cover and high quality alloy steel which is cutting-resistant, leveraging-resistant and dill-resistant. It will provide your bike with more safety. The silicone cover makes it resist from dust and dirt to prolong the life of your lock. At the same time, this bicycle lock will protect your bike from scratching.

【ADDITIONAL 4FT CABLE】Bike U-lock combin with 4FT steel loop cable can provide your bike with greater locking flexibility and better protection. With 4ft high-quality steel cable allows greater locking flexibility. Secure your bicycle, motocycle, electromobile to bike racks, fences, poles and more.

【MORE SAFE】Mountain bike locks sing zinc alloy lock core and complex serpentine key slot, which has a precise structure to prevent technical opening. Moreover, this bike u lock comes with 2 rust-resistant pure copper keys, it will be more safe and you will never have to worry when you lose one.

STRONG & SAFE The 0.57'' diameter bike U lock is made of hardened high-performance alloy steel, and the lock head is made of zinc alloy. The U-lock is resistant to cutting and leverage attacks and provides excellent anti-theft performance. 0.98 kilograms of weight in exchange for enough strength and security

LAGER U-SPACE: Interior locking dimensions: 7.5" x 4.5", Exterior dimensions: 9.8" x 7". Easy to carry and store. It provides more inner U-space than other U-locks to help lock items. NOTICE: NO bracket available

Easy to Use: The bike U lock has a 4-digit resettable anti-theft combination. Keyless convenience and annoyance, no longer have to worry about key loss and key disconnected problems. The initial password is 0000. When you set a new password, please remember to jot it down or take a photo to avoid forgetting it. NOTE: When setting your new password, please first keep the digital wheel in the correct unlock password state before turning the reset disk. Turn the reset disk 90° to set a new password

STURDY: This bike u lock is made of 0.63inch(including 0.1inch PVC cover) carbon structural steel which is cutting-resistant, leveraging-resistant. The PVC cover makes u lock can resist corrosion from dust and dirt to prolong the life of your bike lock.

NO BLOCKING: The lock cylinder of u lock is made by zinc alloy blade, which has a precise structure to prevent technical opening. With the lock dust cover and cooper lock cylinder, no need to worry about blocking when opening the bicycle lock.

PORTABLE: The size of the u lock is 8.3*5.7inch. Comes with a mounting bracket that is suitable for all circular tripod in diameter ≤1.18inch. With the portable size, you can put this bike u lock into your bag or mount it on the frame of your bike.

STRONG & SAFE: The 14.6mm diameter bike U lock is made of hardened high-performance alloy steel, and the lock head is made of zinc alloy. The U-lock is resistant to cutting and leverage attacks and provides excellent anti-theft performance. 0.89kg of weight in exchange for enough strength and security. 12mm x1.5m (including PVC cover) steel cable provides you with multiple locking, two annular ends can pass through each other and gives you solid security in every location, simple and fast.

LAGER INNER LOCKING SPACE: The U Lock interior locking dimensions: 7.5" x 4.5", Exterior dimensions: 9.8" x 7". U-lock and steel cable are easy to carry and store. The portable easily fits in backpacks. It provides more inner space than other U-locks to help great lock items. U-locks can be used separately, such as locking bicycles and scooters. NOTICE: NO bracket available

Easy to Use: The bike U lock has a 4-digit resettable anti-theft combination. Keyless convenience and annoyance, no longer have to worry about key loss and key disconnected problems. The initial password is 0000. When you set a new password, please remember to jot it down or take a photo to avoid forgetting it. NOTE: When setting your new password, please first keep the digital wheel in the correct unlock password state before turning the reset disk. Turn the reset disk 90° to set a new password

【Imported Lock Cylinder and Dust Cover】The D lock cylinder of the bicycle is made of C-grade pure copper blades and has a precise structure to prevent various technologies from opening. When you finish the lock, you can rotate the cover to protect the lock head from dust and water. In addition, the bike locks heavy-duty anti-theft combination is equipped with two rust-proof copper keys with a complex snake-shaped slot, which is safer to use.

【Double-opening Head】Our keabys bicycle u lock combination for electric scooter lock (some people call it D lock ) is a double-opening head, the thief needs to break u shape of ulock bike lock (Candado para Bicicletas)on both sides at the same time to open it, which is safer than a single-opening head u bar bike lock.

【Thick Silicone Bicycle Locks with Combination】This u bolt electric scooter locks anti-theft is made of 16mm/0.63 inch (including 0.1 inches friendly silicone sleeve) hardened high-performance alloy steel, which can resist cutting and lever attacks, increasing the sturdiness and durability of the lock, so u lock ebike lock will provide more security for your bike.

Hefty & Strong Cut Resistant: Our motorcycle chain lock is made of unbreakable 3T manganese steel with a special anti-corrosion coating. Each link has a thickness of 2/5", inside height of 13/8" and inside width of 1/2", it can withstand a total of 6KN tension and 13KN shear force providing maximum cut resistance and the bike chain is much safer than most other chain locks in the market, strong and tough.

Easy to Use: The bike U lock has a 4-digit resettable anti-theft combination. Keyless convenience and annoyance, no longer have to worry about key loss and key disconnected problems. The initial password is 0000. When you set a new password, please remember to jot it down or take a photo to avoid forgetting it. NOTE: When setting your new password, please first keep the digital wheel in the correct unlock password state before turning the reset disk. Turn the reset disk 90° to set a new password

Protection Material: Marketable bike chain locks expose your items/property to potential damages and scratches when in use. Painted on our U lock combination with a protective vinyl coating (PVC), our security motorcycle chain lock is wrapped by a water-resistant nylon sleeve, it resists corrosion from water, dust, and dirt to prolong the life of your lock, and prevent scratching your property.

【Anti-Theft】The lock cylinder is made of zinc alloy, more anti-drilling. The unlocking method is double-door unlocking, more higher anti-theft coefficient than single-door unlocking.The shape of the key is a serpentine groove, difficult to copy and more secure.

【Sturdy&Durable】Thinvik Bike U Lock which is cut-resistant,made of 18mm hardened max-performance steel shackle and eco-friendly silica gel,anti 12 tons of hydraulic shears,, leverage-resistant and drill-resistant, high quality alloy steel. Covered in a 0.10in silicone cover, the lock will stay protected from wear and tear, while also protecting your bike from scratches.hard to cut,break or pry open, strong and durable.

【Multi-Locked 】The unlocking method is double-door unlocking, more higher anti-theft coefficient than single-door unlocking.Length 4ft Thick 12mm high-quality steel cable combinate with U-lock,Steel cable can lock a bike to a bike frame or fence, tree or utility poles and so on.Making locking more flexible.

HIGH SECURITY: TiGr mini heavy duty bike u lock is a disc-style ulock cylinder which includes 2 keys. Plus, a push-button u-lock bikes bolt feature - no key required to engage ulocks. Keeping your bicycle safe from would be thieves since 2011.

MOUNTING CLIP INCLUDED: Our anti theft metal hook comes with a free mount clip/holder. It is easy to use and install as a bottle cage and holds any shackle that fits snuggly on your bicycles as you ride.

SCRATCH-RESISTANT AND LIGHTWEIGHT: Our titanium road bicycle locks weigh 0.9 lbs/0.4 kg which is less than a full water bottle and less than half the weight of common standard shaped steel u-locks that provide comparable security. Also, the PVC long bikes ulock coating protects bike frame from scratches.

✔️3-IN-1 BIKE LOCK SET: This set comes with (1) 33.5”HRC55 Steel Folding Lock with 2 Keys; (2) 15mm heavy duty bike U-Lock Shackle with 2 Keys; (3) 6 feet extended bike lock cable.

✔️SUPER HARDNESS FOLDING LOCK: The folding lock was made of extra-hardened HRC55 Rockwell stainless steel with 0.25-inch thickness. The bike folding lock open diameter is 33.5”which is a perfect size for electric bike and fat tire scooters

✔️HEAVY-DUTY BIKE U LOCK WITH CABLE: This bike u-lock has an extra thickness of 0.6-inch and the U-shape size is 11”x6”, it was also made of HRC55 Rockwell super-hardness stainless steel fully coated with weatherproof PVC and rubber. The extension cable of 6-foot long and 0.4-inch thickness would provide extra protection to both your bike and helmet

Sturdy and Durable: Heavy duty bicycle U lock is made of hardened max-performance steel shackle resists cutting and leverage attacks.

Easy and strong to lock your bike:The bike lock with 14mm U shack to lock and go! Locking your bike and your wheels with 10mm x 1200mm cable, fast and easy with our quick, no-hassle system.

Design & Performance: Silica gel layer coated protect the d-lock bike lock prevent scratched. Waterproof bike lock with mounting bracket, no extra packing required.

SECURITY FIRST, NO NONSENSE GIMMICKS – The D-lock is designed to protect high-quality bikes - no more and no less. Hence, this D lock is no lifestyle accessory with a fancy design or exciting gimmicks. We are simply focussing on security by using the strongest available steel and a safe cylinder. A secure lock does not need anything else. And that is exactly we do: we combine years of experience in the field of bike security with our high German security standards. For details, please see below.

SOLID STEEL FOR SECURITY LEVEL 10 OUT OF 10 – In contrast to many other U locks, we do not use light steel with reduced weight but also reduced safety. We believe there is simply no shortcut for security - a lock needs to be massive to prevent from theft. That is why our lock shackle has a diameter of 0.55” / 14 mm solid hardened steel and, thus, is especially secure against bolt cutters & metal saws. The “price” for this high security focus is a lock weight of 3.3 lbs / 1.5 kilo.

SECURE MULTI-DISC CYLINDER – Instead of relying on the typical insecure car key cylinder which is a relatively easy target for lock-pickers, we equipped our lock with a secure multi-disc cylinder. Multi-disc cylinders are extremely difficult for thieves as they have to align several discs at the same time to pick the lock. Aditionally, the striking T-structure of the 2-chamber locking system additionally protects the lock against attacks by drilling. 3 keys are included.

HEAVY DUTY DOUBLE LOCKING: This high security bike U-lock has strong mechanism that increases holding power and provides extra protection against attacks. The double locking blocks both shackle ends and the highest security disc-style key cylinder is pick and drill resistant.

FULL SECURITY PACK: Tough U-lock, 13mm-0.5in pure steel (not counting the outer rubber as others do), heat-treated hardened max-performance steel shacke, resists hand tools, bolt cutters and levarage attacks. As additional security, it includes a very flexible braided steel cable to fix other parts of your bicycle to a fixed point as a security anchor URBAN UR55.

OPTIMAL SIZE MORE POLYVALENT: This bicycle anti-theft U lock has been devoleped after a deep market research in cooperation with bicycle specialist pros to provide you the optimal zize in order to be more polyvalent, functional and easy to carry. Exclusive U-locking dimension 80x190mm-7.48x3.14 that you can use alone or in combination of the 120cm-47.2in double looped cable made of 10mm-0.4in braided steel.

Universal

Childproof

Standard key

U-Locks

X4P Quattro Locking Mechanism for four-sided protection

Longer 111x260mm 4.37x10.24'' TriRadius shackle

U-Locks

X4P Quattro Locking Mechanism for four-sided protection

Mini 90 x 140mm (3.55x5.52”) ;TriRadius shackle Cable 120CM X 10mm (4' X .39")

U-Locks

BullDog Mini with 4 foot fully coated, braided steel cable for greater locking versatility.

New Z-Cylinder is bump-proof and resists picking, pulling or drilling.