Best Alarm Bike Locks in 2025

Key lock helps you store your bike more securely.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.

4 feet x 12 mm braided steel self-coiling cable provides convenience and strength

Tough protective vinyl cover offers weather resistance and prevents scratches

SILVER RATED BIKE LOCK - Security Protective Bike Chain Lock. Strong Antitheft Guard System Bike Lock Chain for City Outdoor & Urban Cycling. Lock for Bike with Automotive Like Safe Keys Protector

3 YEAR WARRANTY BIKE LOCKS ANTI THEFT - Hardened Steel Bike Locks with Key. Solid Tough Hard Chain Lock Safety Gear. Smart Bike Lock for Urban Mountain City & E-Bikes

PATENTED MAGNETIC CLOSURE - Smart Bicycle Locks with Magnetic Function for Easy Locking. Waterproof Weatherproof No Corrosion Bike Chain Locks for Outside. 7MM Metal Links Bicycle Lock Chain for Outdoor & Indoor

14mm six-sided chain links made of 3t HARDENED MANGANESE STEEL for ultimate strength

Durable, protective nylon cover with hook-n-loop fasteners to hold in place

Includes maximum security New York Disc Lock with 15mm MAX-PERFORMANCE STEEL SHACKLE

TOP RATED LIGHTWEIGHT COMPACT BIKELOCK - Best Light Weight Folding Bike Lock. Portable Solid Key Bike Lock Protects Bicycle - No Code. Strong Equipment for City Outdoor & Urban Cycling. Bolt Cutter Drill & Saw Proof

3 YEAR WARRANTY BIKE LOCKS HEAVY DUTY ANTI THEFT - Patented Ultra Secure Hardened Waterproof Weatherproof Bicycle Protector for Peace of Mind with Anti Tamper Rivets. Multi Locking Guard System Stops Thieves

BIKE LOCK WITH KEY & SECURE PROTECTION - Pro Kit & Accessories Set: Master Keys & Easy Carry Case Holder. Flexible Foldable Bicycle Locks Open to 85 CM Chain Link Circumference. Locks to Stands Racks & Bars

5-DIGIT COMBINATION: Comes with a 5-Digit resettable combination locking mechanism, this bike lock allows up to 100,000 possible codes making it nearly impossible to crack, which is safer than other 4 digit locks. Never need to worry about losing keys.

HUMANISED DESIGN: The smooth lock head of this bike chain lock is made of PE plastic which helps you turn the lock accurately without blocking. The combination bike lock comes with a flexible protective cloth sleeve which can protect the bike from scratch.

STURDY & DURABLE: It's hard to break through as the lock cylinder of the bike lock is made of zinc alloy. The bicycle chain lock is made of 0.24inch alloy steel which is drill-resistant and anti-tech unlocking. It will provide your bike with more safety.

Maximum security and theft protection. Steel cable provides protection against thieves. Secure a variety of items: gates, bicycle, bike cable lock, kayaks, surfboard, paddle boards, generators, power stations, grills, outdoor equipment, camping equipment, scooter, ladders, patio furniture, chairs and more!

Versatile and unique design. Unlike most security cables, the male end of the cable is the same diameter as the cable itself allowing the cable to pass through narrow spaces such as kayak and paddleboard scupper holes. Cable is multiuse, multipurpose and can secure a wide range of items such as kayaks, paddleboards, bike, scooters, sport and yard equipment and more.

Weatherproof and corrosion resistant materials. Constructed of marine grade weatherproof steel. Vinyl coated to provide additional protection against the elements and prevent scratches to the secured item. Lock is made from weatherproof electro galvanized zinc alloy and sealed with a protective coating to enhance corrosion resistance. Note: rinse the combination lock with fresh water when exposed to salt water and periodically lubricate.

🚲 DETER BIKE THIEVES - Our bicycle locking cable is an effective deterrent for theft. It will take immense strength and specialized tools before it breaks, thanks to its thick material and design.

🚲 STURDY IN BRAIDED STEEL - Flexible steel braided into a 3/8” thick 15ft lock cable. That’s what you’re getting with our bike lock cord. Its sealed looped ends are suitable for all padlocks.

🚲 NO SCRATCHES - You don’t have to worry about this bike cable lock damaging the paintwork of your bike frame. It’s coated in vinyl, which prevents rust and scratches while also making it stronger.

LOCK APPLICATION: For indoor and outdoor use; Cable lock is best used for bicycles, ladders, lawn mowers, and sports equipment.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.

EASE OF USE: Resettable 4 dial combination for keyless convenience, set and reset your combination allowing thousands of personalized combination code options; Self-coiling for easy storage

DURABLE DESIGN: Cable is made from braided steel for strength and flexibility; protective vinyl coating helps to prevent scratches

【80db Alarm】Press the red button for alarm setting, 80db alarm will be issued when vibration is received. Its alarm feature should do a great job scaring off thieves. (80db can be considered the sound of a busy road with cars.)

【Strong Cut Resistant】Square link chain made of triple-heat-treated manganese steel for maximum strength. 4-feet long and resists prying and cutting for maximum protection wherever you park. Much safer than most of other chain lock in the market. The chains have a soft and strong canvas sleeve to lessen wear and noise.

【3 Double Row Serpentine Slot Keys】Made of hard and durable stainless steel, never bend or twist or wear out and difficult to duplicate. Anti-theft lock cylinder design, the key can only be pulled out after locking to prevent key loss. One for daily use, the others are self-assigned.

【Security & Durable】: The length of the chain is 47 inch, with 0.4 inch diameter chain links, is made of steel known for it cut-resistance. The lock cylinder has a waterproof and dustproof cover, the key is also unique, the plum shape and the anti-theft device are stronger.

【Humanised Desigh】: Durable weather-resistant nylon sleeve to prevent scratch the bike. This bike chain lock comes with 2 copper keys, it will offer you some peace of mind in case you lose one.

【Wide Application】: bicycles, motorcycles, sports equipment, garage, farm, fence, toolboxes, electric cars, handcarts, shops, glass door skateboards, scooter, wagon lawnmowers, sports equipmentand various safety applications.

[KEEP YOUR BIKE SAFE AND SECURE WITH FOSMON'S 5 DIGIT COMBINATION BIKE LOCK] Fosmon's bike lock provides a strong and secure solution for keeping your bike safe when it is out of sight. The included bike mount will insure you have your lock with you every time you go out to the bike.

[EXTREMELY STRONG AND DURABLE] The bike lock is made of a 12mm braided steel cable coated in PVC to help prevent corrosion and easy cutting. The hardened zinc alloy lock core and shackle are built to withstand punishment from the elements and most potential thieves.

[100,000 COMBINATION POSSIBILITIES] With 100,000 possible combinations, the 5 digit cable lock is nearly impossible to break into. The lock offers you 90,000 more combinations than the typical 4 combination lock.

★★ Ultra-Thick and Heavy Duty Chain. 0.36 inch-Diameter Ultra-Thick Chain made of 3T manganese steel, strong and tough, much safer than most of other chain lock in the market. Bike chain lock dimensions: 3ft (90cm) long, 9mm (0.36 inch) thick hardened steel chain links. Weight: 2.87lbs (1.3Kg)

★★ Waterproof & Dirt-proof Cap. The dust cover can protect your keyhole from rain and dust. High security lock cylinder is pick and drill resistant.

★★Durable weather-resistant nylon sleeve prevents the chain lock from scratching and rusting. You can just wrap the heavy duty bike lock on your bike frame or just put it into your backpack.

High Quality: With 6mm thick security heavy-duty chain links, our bike lock is made of heavy-duty steel known for it cut-resistance, stronger and more durable than other bike chains. Keep your bike from being stolen and keep your bike safe.

Protective Cloth Sleeve: Bicycle chain lock is enclosed in a flexible protective cloth sleeve, which effectively protects the bike chain from rusting and scratching. Protective cloth cover can protect your chain lock from rain and dust, protect it from scraping and sawing, expand lifespan.

Easy to Set Combination: 4-digit combination locking mechanisms for keyless convenience. Easy to set your own personalized number combination. The code is designed so you don't have to carry your keys.

MAXIMUM SAFETY: Bicycle chain lock is made of high-strength manganese steel, the lock core is multi-layer DISC lock core, all-round anti-saw and anti-drill, technically up to grade B, with strong resistance to cutting and anti-saw. It is the patron saint of item safety.

PERFECT DESIGN: Chain length is 98 cm, diameter 9 mm, optimal length and thickness. The lock cylinder has a waterproof and dustproof cover, the key is also unique, the plum shape and the anti-theft function are stronger.

INTIMATE SERVICE: The bike lock is covered with non-toxic nylon belt, will not scratch the bicycle, motorcycle, each chain lock has a sturdy and beautiful carrying case

PROTECT WHAT YOU VALUE ✔ This High Performance and Certified SIGTUNA Bike Folding Lock is made of special hardened ABS Steel bars and rivets and provides Maximum Security for your bike in all risk areas!

STRONG AND SECURE ✔ This SIGTUNA Folded Bike Lock is made 5mm Steel Bars, with specially designed rivets for extensive holding power against leverage attacks!

DURABLE and EASY TO USE ✔ This Bike Fold Lock comes with soft-touch Coating on the bars and matching silicone Lock Body Cover to protect your bike's paint job and an a easy-to-mount Mounting Bracket. Your great bike accessories.

【COMPACT BUT SECURITY】 Still use heavy duty u lock or bike chain lock? The heavier the bicycle lock, The harder is to brake. Our 2022 new lightweight 0.49kg(1.0lb) bike foldable lock will convert you. Folding bike lock offer 63CM(2.06ft) of secure locking space with 5mm super strong hardened-steel construction which is enough to secure wheels & the frame of any bike. 8 piece joints heating processed bike lock body is a good deterrent against cable/chain cutters.

【CARRY WITH YOU】And anyone who’s ever struggled with a u-lock frame mount that’s not able to hold bike lock quietly or securely will really appreciate the tight, noiseless fit of a bike folding lock against their frame! WE PROVIDE 1 BLACK STORAGE BAG, so whether you throw them into a bag/backpack or use the supplied frame mount, they're the least hassle to transport. Electric scooter locks anti theft provide reasonable security without incurring a big weight penalty when you're touring

【EASY TO MOUNT】EXCELLENT COMPACT LOCK. Foldable bicycle lock fits great and doesn’t wiggle at all. Bike locks easy to use and screws right onto bike where bottle cage holder goes. Also comes with zip ties to use in case you don't have the screw holes. Scooter locks works perfectly, covered with ABS rubber paint and is not banging around scratching up your beloved bike. While length causes some challenges to lock up sometimes, the compact size and security folding bicycle lock provides is amazing

Secure and Durable - Strong steel cables with vinyl coating provide security and cut resistance, prevent scratching, and increase durability.

Easy to Set Combination - Resettable 4-digit combination bike lock provides keyless convenience with a personalized code. No risk of a stolen or lost key

Versatile - Ideal for securing a variety of items, including bikes, scooters, gates, skateboards, motorcycles, lawnmowers, grills, patio furniture, sports equipment, tool boxes, ladders, doors, and more.

44 inches long cable: With super lightweight 5 ounces, the digital lock can be stretch up to 44 inches and be used on bike, scooter, motorcycle helmet, skateboard, stroller, and fence, etc.

Strong braided steel: Features braided enhanced steel, the bike lock cable is self-coiling, and strength and flexibility. Protective vinyl coating prevents the cable from scratching your bike and scooter.

Flexible and sturdy: With a thin-designed metal stick and flexible cable, the scooter lock can get through many stuff like small electric scooter wheels. It is perfect to lock your fence gate and scooter.

THEFT DETERRENT -Keep the honest people honest,When we are in bicycle travel ,the mini portable cable lock is good option for these quick stops ( grab some coffee or a pit stop or grab ride meal ),which is to secure the road bike at the sightseeing stops.

LIGHT WEIGHT AND EASY TO USE -The portable cable lock is only 76g ,it is easy to carry and operate ,Push-button retraction for easy cable recoiling.

HIGHLY VERSATILE-the cable lock is good purpose for luggage, helmet ，bikes, guns, work equipment, briefcase, purse, doors, gates, and many other items safe.

HIGH-QUALITY MATERIAL - Our Lock Cable is made from braided steel for strength and flexibility; protective vinyl coating helps to prevent scratches.

RESETTABLE COMBINATION BIKE LOCK - Resettable 4 dial combination for keyless convenience, easy to set your own personalized combinations.

PORTABLE BICYCLE LOCK CABLE ACCESSORIES - Only 100g weight and 12cm in diameter, so don’t worry about where your lock is not stored, it can be hung on the frame or even put in your pocket, easy for child.

Lock & Unlock Mode::This smart electronic lock can be locked and unlocked by password or remote control. It is ery conenient without any key. The remote control can control multiple locks or similar remote alarms at the same time. The lock can learn up to eight remote controls.

Lock & Unlock Mode::This smart electronic lock can be locked and unlocked by password or remote control. It is ery conenient without any key. The remote control can control multiple locks or similar remote alarms at the same time. The lock can learn up to eight remote controls.

Timely Alarm::The electronic lock's alarm is ery sensitie, and an alarm can be triggered immediately when the lock is moed or moed. When the wire rope is cut off or the locking screw is remoed, an alarm will be issued immediately. If you enter the wrong password three times, the alarm will be actiated and the alarm sound will reach 115 decibels or more.

【8 Kinds Remote Control】A lock can learn up to eight remote controls.

【Multiple Function】A remote controller can control multiple locks or similar remote alarms at the same time.

【Environmental Affect】It can be used normally in the temperature range of - 10 +60.

【Three Way to Unlock: Fingerprint & Bluetooth & Dynamic Password】-Use smart phone and fingerprint, you can choose the most convenient way for you or your loved ones and friends to unlock. The APP has more function. It can easily check the status of your lock remotely. You can also check the history of unlocking records on your cell phone to ensure the safety of your bike.(Note: Unlocking with Bluetooth requires a distance of about 10m from the lock and open the slide cover)

【Up to 40 Sets Fingerprints】-Easy setup, The thumbprint padlock takes less than 0.5 secs for unlocking, supports 40 sets of fingerprints. You can also authorize and share fingerprint padlocks with your family/friend to use it. Fingerprint lock gets rid of the troubles of losing keys or forgetting password. Your fingerprint is your password! Padlock with fingerprint function provides a safe and private way for unlock

【Flexible Wire & Coil Rope Design】 -With the curly design, the original 100cm rope length can be reduced to a small space, which will not appear huge when locked in the bike. At the same time, it can also be elongated according to the situation to lock some large items. The real 10mm diameter wire rope bike cable lock, fully protect the safety of your bike. (Warm tip: Push the slide cover to the closed state after using the Fingerprint lock)

【SMART & CONVENIENT】Keyless bike lock,no combos,easy to connect between Nulock and the phone over Bluetooth,Apps work for Both iOS and Android (make sure the screws for the battery cover are tightened and pressing lock button before pairing with the phone).No worry about key lost any more.

【ALARM & ANTI-THEFT】Vibration,breakage,disassembly and cable clipping triggers alarm at 110db to deter thieves or burglary (vibration alarm will NOT work when the owner's phone is connected to the device.).Great lock with alarm for bike, electric scooter,motorcycle etc with anti-theft.

【ROBUST & ANTI-CUTTING】Nulock alarm Bike lock cable material:7 braided steel (each is made of 19 braided steel) combined with rust-protective vinyl increase cut resistance for a long time use. Braided Cable is 0.4" in diameter and 71" in length works for mulitple bikes locking, motorcycle wheels,stroller wheels,garbage can,patio grill,outdoor furniture,propane tank,recreational or emergency generator locking etc.Perfect bike locks heavy duty anti theft/bicycle locks heavy duty anti theft.

Stainless Steel chain lock with Luminous Nylon Covered. Stainless steel 304 chain length 3.6 feet (110cm), 2/7" (7.25mm) Diameter with stainless steel 304 lock head, brass cylinder & 4 brass keys. Snake shape key way can prevent foregin matters to insert the lock cylinder hole to open the lock.

This chain and lock is made of stainless steel 304. So It can be used under water properly.

This lock is great lock for Moto, Scooter, Bike, Door and etc. Also can be used bad condition. Such as Yacht, Ship.

Made of high quality metal that proides corrosion protection, wear resistance, durability and durability. Easy and conenient to install and suitable for locking the bike.

Use the highly sensitie defense probe, microcomputer control, high reliability, high sensitiity and highest security. In alarm situations, it is precisely triggered by intruders.

Specially designed for the bike, install it to ensure the safety of your bike. Mini appearance, it's conenient to take anywhere. ibration, disassembly triggers alarm at 110 dB noise to preent thiees or burglary.

Bike lock chain features squared link construction makes it almost impossible for theft tools to get a secure grip on the chain to cut. The thick hardened steel is extra resistant to sawing and the welded finish makes prying insurmountable

Bike chain lock is 2.8 ft. (850 mm) long and each link has a thickness of 3/10 in.（7.8 mm）, inside height of 2- 3/5 in.（66 mm） and inside width of 12/25 in.（12 mm）

Bike lock features a nylon sleeve to protect your property from scratches and damage while in use

Designed with 110dB alarm function, effectively frighten the thefts can use both indoors and outdoors.

Low consumption and long standby time.

Anti cutting,anti disassembling,removing alarm,vibration alarm. Perfect for all bikes,motorcycles,door etc.

Anti-theft - Made of high quality steel, sturdy, durable, extremely secure bicycle chain lock discourages most thevies and crimes from your properties, resisting leverage attacks, providing excellent anti-theft performance.

Dust Resistant & Protective Cloth Sleeve - Cloth protector always protects inner iron chain, which is both dust-resistant and scratch-resistant, prolonging the chain lock using lifespan.

Dimensions - The inner chain diameter is 5/16'' for a better anti-cutting function. The chain lock length equals 38-1/4''. The gross weight of the whole lock set is 2.67 lbs.

Product Name : Electric Bike Lock;External Material : Plastic, Metal

Main Color : Black;Rated Voltage : DC 48V

Wire Quantity : 3;Wire Length(Each One) : 13cm/5.1"