A strong motorcycle lock combines a suitable locking point, resistant materials, and a format you will actually carry and use, making it suitable for commuters, touring riders, and outdoor parking. This roundup covers 10 options across alarmed disc locks, compact chains, heavy-duty chain-and-U-lock sets, and motorcycle-compatible bicycle locks. The products differ substantially in weight, reach, pin size, chain thickness, and included features.
Alarmed disc locks can provide a loud movement warning without adding a long chain, while chain systems offer more flexibility for securing a motorcycle to a fixed object. Before choosing, check your brake-disc hole size, the distance around your intended anchor, and whether the lock’s weight fits your daily routine.
The best lock depends on how and where you park. Choose an alarmed disc lock such as the YOHOOLYO or Mathtoxyz models for compact movement alerts, or the URBAN UR6 for a 120 dB alarm, warning alert, and LED signal. For securing a motorcycle to an object, choose a chain system such as the 12 mm OKG, 12 mm Titanker, or 5-foot KOHLBURG.
Check weight and reach carefully: heavy chains provide substantial material and length, but they are less convenient to carry than disc locks.
Motorcycle Locks: A Comparative Overview
How We Compared These Products
We compared dimensions, capacity, materials, compatibility, included components, and care requirements across many Amazon listings. These details matter because the product must fit the available space, intended use, setup requirements, and maintenance routine. After examining the wider field, we selected 10 products from YOHOOLYO, OKG, KOHLBURG, Kryptonite, NDakter, urban, Titanker, and Mathtoxyz.
The shortlist includes products such as YOHOOLYO Alarm Disc Lock Motorcycle Disc Brake Lock Anti-Theft Waterproof 110 dB 7mm Pin, OKG Heavy Duty Motorcycle Chain Lock, and KOHLBURG 13lbs Massive Motorcycle Chain Lock [Sold Secure Diamond] 5ft Long. Every recommendation is tied to information stated for that specific product; unclear or missing features were treated as unknown rather than filled with assumptions.
Detailed Reviews: Best Locks For Motorcycles
1. YOHOOLYO Alarm Disc Lock Motorcycle Disc Brake Lock Anti-Theft Waterproof 110 dB 7mm Pin 5ft Reminder Cable for Motorcycles Bike Scooter Carry Pouch (Black)

Best for: Audible deterrent alarm.
This all-metal motorcycle lock features a loud 110 dB alarm designed to deter thieves by making noise. Its 7mm pin allows for 360-degree locking, making it suitable for motorcycles, bicycles, and scooters.
Constructed entirely from metal, this lock offers sturdiness and sustainability. The integrated alarm reaches 110 dB, providing an audible warning. With a 7mm locking pin, it can be fixed in any position, offering versatile application for various vehicles and ensuring a secure fit.
Product Details
| Brand | YOHOOLYO |
|---|---|
| Compatible Devices | motorcycles, bicycles, scooters |
| Item Weight | 12.32 ounces |
| Manufacturer | YOHOOLYO |
| Model Number | LK603 |
Pros
- Loud 110 dB alarm sound
- Sturdy, all-metal construction
- Waterproof design for durability
- Includes a 5ft reminder cable
Cons
- Reminder cable can be easily forgotten
Ideal for riders seeking an audible deterrent, this lock is best for those who prioritize a loud alarm. Consider its size and the reminder cable's necessity for your specific parking situation.
2. OKG Heavy Duty Motorcycle Chain Lock, 4 Keys, 3.3 ft x 1/2 in (12mm) Thick Hexagonal Cinch Security Chain with 18mm Cut Proof Hardened Alloy Steel U Lock for Motorcycles, E-Bikes, Mopeds, ATVs, Etc.

Best for: Heavy-duty security chain.
This heavy-duty chain lock boasts 12mm hexagonal links made from triple heat-treated boron manganese anti-rust steel for extreme strength. Its design aims to prevent bolt cutter attacks and leverage attempts, offering ultimate protection.
The 12mm hexagonal chain links are constructed from advanced, triple heat-treated boron manganese anti-rust steel, resisting bolt cutters and leverage. The reinforced, anti-rust lock shell and 16mm hardened steel shackle with a double deadbolt mechanism provide superior defense against various hand tool attacks.
Product Details
| Brand | OKG |
|---|---|
| Color | Black |
| Included Components | Heavy Duty Small U Lock, 4 Keys, 1 Heavy Duty Security Chain |
| Item Dimensions | 39.3 x 4.33 x 0.47 inches |
| Item Weight | 9 pounds |
| Dimensions | 39.3 x 4.33 x 0.47 inches |
| Manufacturer | OKG |
Additional Product Information
| Part Number | OKG-U16-12110H |
|---|---|
| Material | 3T Manganese Steel, Stainless Steel Cylinder, Nylon Chain Sleeve |
| Model | OKG-U16-12100H |
| Model Number | OKG-U16-12100H |
| Recommended Uses | Secure any motorcycles, bicycles, e-bikes, ATVs, mopeds, generators, yard tools, etc. |
| Special Feature | Ultra Security, Heavy Duty, Waterproof, Anti-theft, Cut Proof, Durable, Weather Proof |
| Style Name | Heavy Duty motorcycle Chain Lock |
Pros
- 12mm hexagonal anti-rust steel links
- 16mm hardened steel shackle
- Cut-resistant design
- Double deadbolt locking mechanism
Cons
- Heavy weight at 9 pounds
This lock is for users prioritizing maximum security against cutting and leverage. It's best for motorcycles, e-bikes, and mopeds where weight is less of a concern than robust protection.
3. KOHLBURG 13lbs Massive Motorcycle Chain Lock [Sold Secure Diamond] 5ft Long
![KOHLBURG 13lbs Massive Motorcycle Chain Lock [Sold Secure Diamond] 5ft Long](https://m.media-amazon.com/images/I/71jZWuCq6XL._AC_SY300_SX300_QL70_ML2_.jpg)
Best for: Highest security level.
The KOHLBURG Alcatraz chain lock, weighing 6 kg, is engineered for the highest security level with specially hardened manganese-chromium steel. It is Sold Secure Diamond approved, signifying top-tier protection against theft.
Crafted from specially hardened manganese-chromium steel, this massive 5ft chain lock offers exceptional strength. Its substantial weight and material composition are designed to provide the utmost resistance against cutting and manipulation, ensuring a high level of security for your vehicle.
Product Details
| Brand | KOHLBURG |
|---|---|
| Color | Robust black protective sheath |
| Included Components | 4 keys and a padlock |
| Item Dimensions | 59.06 x 3.94 x 1.57 inches |
| Item Weight | 6 kg |
| Dimensions | 59.06 x 3.94 x 1.57 inches |
| Manufacturer | Stahlwart Kohlburg |
Additional Product Information
| Part Number | Alcatraz |
|---|---|
| Manufacturer Warranty Description | According to legal requirements |
| Material | Specially hardened manganese-chromium steel |
| Model | Alcatraz |
| Model Number | Alcatraz |
| Recommended Uses | E-bike lock, Lock for valuable bikes, Motorcycle lock |
| Special Feature | Chain and padlock usable separately, Sold Secure highest security level DIAMOND, Solid hexagonal chain protects against bolt cutters See more |
| Style Name | Massive 5ft chain lock – Sold Secure DIAMOND approved |
Pros
- Sold Secure Diamond approved
- Specially hardened manganese-chromium steel
- Massive and strong construction
- 5ft length for versatile securing
Cons
- Very heavy at 6 kg (13 lbs)
This lock is for those requiring the absolute highest security, particularly for high-value motorcycles. Its significant weight means it is best suited for stationary security rather than frequent transport.
4. Kryptonite Keeper 785 Bike Chain Lock, 2.8 ft Heavy Duty Anti-Theft Lock

Best for: Durable everyday security.
The Kryptonite Keeper 785 features 7mm four-sided manganese steel links for strong resistance to cutting and leverage attacks. Its patented locking system includes a high-security disc-style cylinder that is resistant to picking and drilling.
This lock utilizes 7mm four-sided links made from 3T manganese steel, offering robust protection. The patent-pending end link design connects the chain directly to a hardened deadbolt, eliminating vulnerabilities. A high-security disc-style cylinder resists picking and drilling, enhancing overall security.
Product Details
| Brand | Kryptonite |
|---|---|
| Color | Black |
| Included Components | Bicycle Lock |
| Item Dimensions | 1.5 x 2.5 x 18.25 inches |
| Item Weight | 1.3 kg |
| Dimensions | 1.5 x 2.5 x 18.25 inches |
| Manufacturer | Kryptonite |
Additional Product Information
| Part Number | 000853 |
|---|---|
| Manufacturer Warranty Description | No information |
| Material | Alloy Steel |
| Model | Kryptonite Keeper 785 Integrated Chain |
| Model Number | 720018000853 |
| Recommended Uses | Security |
| Special Feature | Portable |
| Style Name | Lock |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Pros
- 7mm four-sided manganese steel links
- High-security disc-style cylinder
- Patented end link design
- Durable rubber coating
Cons
- Relatively short at 2.8 ft
This lock is ideal for cyclists and motorcyclists needing reliable, everyday security. It's best for securing bikes to fixed objects but may be too short for some larger motorcycles or anchoring points.
5. NDakter Bike Locks Heavy Duty Anti Theft 18mm Thick, Motorcycle U Lock with 4FT x 6mm Security Chain, 3Keys Large U-Shape Electric Bicycle Wheel Lock for Ebike, Escooter, Fat-Tire Dirt-Bike, Tricycle

Best for: Robust U-lock and chain combo.
This heavy-duty set combines an 18mm hardened steel U-lock with a 6mm security chain for comprehensive anti-theft protection. The U-lock features a double-open design and a substantial shackle for enhanced security.
The 18mm hardened steel shackle of the U-lock provides significant resistance to cutting and leverage. Paired with a 6mm x 120cm security chain, this set offers dual-layer protection. The lock's material and dimensions are engineered to deter common theft methods effectively.
Product Details
| Brand | NDakter |
|---|---|
| Color | Black |
| Included Components | u lock with chain & 3 keys |
| Item Dimensions | 7.09 x 3.15 x 1.18 inches |
| Dimensions | 7.09 x 3.15 x 1.18 inches |
| Manufacturer | NDakter |
| Material | Brass |
Additional Product Information
| Model | motorcyclee u lock 001 |
|---|---|
| Model Number | Bügelschlösser |
| Recommended Uses | for Bike, Ebike, Escooter, Moped and Gate |
| Special Feature | Anti-Drill |
| Style Name | Modern |
Pros
- 18mm hardened steel U-lock shackle
- Includes a 6mm security chain
- Anti-drill special feature
- Suitable for various electric vehicles
Cons
- U-lock's internal width is limited at 5.5 inches
This combo is best for users who want both a stout U-lock and a versatile chain. It's suitable for e-bikes, scooters, and motorcycles, but ensure the U-lock's internal dimensions fit your frame or disc.
6. Kryptonite Keeper 712 Bike Chain Lock, 4ft Heavy Duty Anti-Theft Lock

Best for: Weather-resistant chain lock.
The Kryptonite Keeper 712 features a 7mm hardened steel chain with four-sided links, designed for maximum resistance to cutting and leverage. Its durable, weather-resistant nylon sleeve prevents scratches on your bike.
Constructed with 7mm hardened steel links, this chain lock offers substantial cut resistance. The patent-pending end link design secures the chain to a hardened deadbolt, reinforcing security. A high-security disc-style cylinder is pick and drill resistant, providing reliable protection against tampering.
Product Details
| Brand | Kryptonite |
|---|---|
| Color | Black |
| Included Components | Kryptonite 001706 |
| Item Dimensions | 7.09 x 7.09 x 1.18 inches |
| Item Weight | 3.7 pounds |
| Dimensions | 7.09 x 7.09 x 1.18 inches |
| Manufacturer | Kryptonite |
Additional Product Information
| Part Number | 001706 |
|---|---|
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material | Alloy Steel |
| Model | Kryptonite Keeper 712 Integrated Chain |
| Model Number | 720018001706 |
| Recommended Uses | Cycling, outdoor |
| Special Feature | Anti-theft |
| Style Name | Kryptonite Cadena Antirrobo Keeper 712-7mmx120cm Integrado 32" 001706 Black |
Pros
- 7mm hardened steel links
- Weather-resistant nylon sleeve
- Pick and drill resistant cylinder
- Patent-pending end link design
Cons
- Chain is only 4ft long
This lock is a good choice for cyclists and motorcyclists needing a durable, weather-resistant chain. It's best for securing bikes to moderate-sized objects, but the 4ft length might limit anchoring options.
7. URBAN UR6 Hi-Tech Motorcycle Disc Lock with Smart Alarm | Best Value | 120dB, LED, Warning, A+ Sensitivity, Truly Waterproof, Long-Life CR2 Battery, Carried Locked, Bike Anti Theft Wheel Brake Locks

Best for: Smart alarm disc lock.
The URBAN UR6 Hi-Tech Motorcycle Disc Lock features a smart 120 dB alarm with a unique warning pre-alert and A+ sensitivity. It is truly waterproof and offers the option to use with or without the alarm.
This lock provides smart security with its 120 dB alarm and exclusive WARNING Alert system, featuring A+ sensitivity to detect theft attempts before the main alarm sounds. The 6mm pin fits most motorcycle brake discs, and its metal and reinforced nylon construction ensures durability and water resistance.
Product Details
| Brand | urban |
|---|---|
| Color | Yellow |
| Included Components | Lock and keys |
| Item Dimensions | 3.15 x 2.36 x 1.57 inches |
| Item Weight | 500 g |
| Dimensions | 3.15 x 2.36 x 1.57 inches |
| Manufacturer | Artago Secure |
Additional Product Information
| Part Number | UR6 |
|---|---|
| Manufacturer Warranty Description | 2 year manufacturer |
| Material | Metal and reinforced nylon |
| Model | UR6 |
| Model Number | UR6 |
| Recommended Uses | Motorcycle, Scooter, Bicycle |
| Special Feature | Without or with alarm. plus Warning and Light Alert. A+ sensitivity |
| Style Name | Hi-Tech Best Value Anti-Theft Security |
Pros
- 120dB alarm with warning alert
- A+ sensitivity detection
- Truly waterproof construction
- Can be used with or without alarm
Cons
- 6mm pin may not fit all disc brake holes
This lock is ideal for riders seeking advanced, smart security with an audible deterrent. It's best for motorcycles with brake disc holes accommodating the 6mm pin, offering peace of mind with its alert system.
8. Titanker Heavy Duty Bicycle Lock Chain with Keys – 3 Feet Anti-Theft Lock for Bikes, Motorcycles, Doors, Gates, Fences, Grills (6mm Thick)

Best for: Cut-resistant steel chain.
This 3ft Titanker chain lock features 6mm thick, heavy-duty steel links known for their cut resistance. It includes a protective cloth sleeve to prevent rust and scratches, along with a dust cover for the keyhole.
The 6mm thick security chain links are constructed from heavy-duty steel, providing good resistance to cutting. The included protective cloth sleeve shields the chain from rust and scratches, while a dust cover protects the keyhole. Regular lubrication is recommended to prolong its service life.
Product Details
| Brand | Titanker |
|---|---|
| Color | 3 Feet, 6mm Bike Chain Lock |
| Included Components | 1 x Titanker Bike Chain Lock, 2 x Keys |
| Item Dimensions | 9.21 x 4.69 x 1.65 inches |
| Item Weight | 1.4 pounds |
| Dimensions | 9.21 x 4.69 x 1.65 inches |
| Manufacturer | Titanker |
Additional Product Information
| Part Number | TK-A01030 |
|---|---|
| Material | Alloy Steel |
| Model Number | 1030200300018 |
| Recommended Uses | Security |
| Special Feature | Portable,Heavy Duty,Anti-theft |
| Style Name | Black-6mm Chain-3Feet |
Pros
- 6mm thick heavy-duty steel chain
- Protective cloth sleeve included
- Dust cover for keyhole
- Cut-resistant material
Cons
- Only 3ft in length
This lock is suitable for basic security needs for bikes, motorcycles, or securing gates. It's best for users who need a moderately thick chain for lighter security applications and appreciate the protective sleeve.
9. Motorcycle Alarm Disc Brake Lock, Motorcycle Locks Anti-Theft Security Wheel Disc Lock Waterproof 110dB Alarm Sound with 5ft Reminder Cable Keys and Carry Pouch for Motorbike Bike Scooter

Best for: Motorcycle alarm security.
This motorcycle disc brake lock features a 110 dB alarm system and built-in sensors that detect shocks and movements to deter thieves. It's designed for easy operation, activating the alarm with a simple locking action.
The lock incorporates sensors to detect shocks and movements, triggering a loud 110 dB alarm to scare off potential thieves. Its design allows for quick activation; pressing the alarm lock button initiates the locking process, followed by an audible beep confirming the alarm is armed.
Product Details
| Brand | Mathtoxyz |
|---|---|
| Compatible Devices | Motorcycles |
| Manufacturer | Mathtoxyz |
| Model Number | MA-CS-B |
Pros
- 110 dB alarm sound
- Shock and movement sensors
- Easy one-button activation
- Includes reminder cable and pouch
Cons
- Alarm may be sensitive to accidental bumps
This lock is best for motorcyclists seeking an audible deterrent and added peace of mind, especially when parking in less secure areas. It's a convenient accessory for motorbikes and scooters.
10. Titanker Motorcycle Chain Lock, Heavy Duty Bike Chain Lock with 2 Keys, Bike Locks with 14mm Thick U Lock for Bicycles, Motorbikes, Mopeds, Scooters (3FT,4FT)(6mm Chain,12mm Chain)

Best for: Dual-layer heavy-duty lock.
This heavy-duty lock combines a 4ft, 12mm square chain with a 14mm U-lock made of carbon structural steel for strong resistance to cuts and lever attacks. It offers robust, dual-layer protection for your motorcycle.
The 12mm square chain and 14mm U-lock, both constructed from hardened steel, provide significant resistance against cutting and lever attacks. The anti-theft lock cylinder features a precise zinc alloy structure, designed for high security and durability, ensuring reliable protection for your vehicle.
Product Details
| Brand | Titanker |
|---|---|
| Color | 4 Feet,12mm Motorcycle Chain Lock with U Lock |
| Included Components | 1 x Bike Chain Lock with U Lock, 1 x Mounting Bracket, 2 x Keys |
| Item Dimensions | 8.78 x 5.79 x 3.35 inches |
| Dimensions | 8.78 x 5.79 x 3.35 inches |
| Manufacturer | Titanker |
| Part Number | Hengulus |
Additional Product Information
| Material | Alloy Steel |
|---|---|
| Model Number | 21381200511040 |
| Recommended Uses | Cycling Motorcycle Key Chain Lock |
| Special Feature | Cut Resistant, Heavy Duty, Anti-theft, Drill Resistant |
| Style Name | Heavy Duty Motorcycle Chain Lock |
Pros
- 12mm square chain
- 14mm carbon structural steel U-lock
- Cut and lever attack resistant
- Anti-theft lock cylinder
Cons
- Very heavy at 8.82 pounds
This lock is for riders prioritizing maximum security through a combination of chain and U-lock. It's best for motorcycles and mopeds where its substantial weight is acceptable for superior protection.
What Buyers Often Overlook
Disc-lock fit, alarm coverage, and carrying demands
For a motorcycle disc lock, the critical fit detail is the locking-pin diameter and the size of the brake-disc holes. The YOHOOLYO uses a 7 mm pin and includes a 5-foot reminder cable, while the URBAN UR6 uses a 6 mm pin and states that it fits most motorcycle and bicycle brake discs; its product data recommends a 10 mm pin for larger holes. The Mathtoxyz model also combines a 110 dB alarm with a reminder cable and carry pouch.
These locks are notably lighter and more compact than chain systems: the YOHOOLYO weighs 12.32 ounces, while the URBAN UR6 weighs 500 g. Their trade-off is reach.
A disc lock attaches at the wheel and does not provide the flexible length needed to wrap around a substantial fixed object.
The Key Product Trade-Off
Chain length, thickness, and the portability trade-off
Chain locks are the better fit when you need flexible reach, but length and steel thickness affect carrying demands. The 3.3-foot OKG set uses a 12 mm hexagonal chain with a 16 mm hardened shackle and weighs 9 pounds. The KOHLBURG Alcatraz extends 5 feet, uses specially hardened manganese-chromium steel, and weighs 6 kg.
Titanker offers a 4-foot chain with a 12 mm square chain and 14 mm U-lock, but lists an 8.82-pound weight. Lighter options trade some material thickness or reach for easier handling: Kryptonite’s Keeper 712 uses 7 mm links and extends to 47.3 inches, while Titanker’s 3-foot chain uses 6 mm links.
A chain sleeve can help protect finishes, but these systems still require an anchor and enough clearance for the chain and lock body.
Best Locks For Motorcycles: Buyer's Guide
Fit, Dimensions, and Compatibility
Compare the listed dimensions with the intended counter, cabinet, appliance, storage, or installation space. Confirm model compatibility and connection requirements where they are supplied. A useful feature cannot compensate for a product that does not physically fit or work with the buyer’s existing setup.
Capacity, Output, and Operating Format
Match listed capacity, volume, output, and operating mode to the actual household or work routine. Larger figures can support heavier use, while a smaller format may be easier to place and maintain. Treat daily output, immediate storage, and container capacity as separate specifications when the listing distinguishes them.
Materials, Construction, and Care
Use the listed materials and care instructions to judge cleaning effort, storage conditions, and compatibility with the intended use. Dishwasher, freezer, food-contact, or weather-related claims are included only when supplied for that product. Check whether routine care fits the way the product will be used.
Included Components and Setup Needs
Review the included components before planning installation or first use. Hoses, adapters, lids, paddles, bowls, brushes, controls, and manuals vary by listing. Confirm power, water, assembly, or accessory requirements from the supplied product information rather than assuming that separately pictured parts are included.
Which Should You Choose?
For short stops and riders who prioritize compact carry, choose an alarmed disc lock: YOHOOLYO adds a 110 dB alarm, 7 mm pin, and reminder cable; Mathtoxyz offers a 110 dB alarm and carry pouch; URBAN UR6 adds a 120 dB alarm, warning pre-alert, LED, and use with or without the alarm. For an anchor point, choose the OKG 3.3-foot 12 mm chain, Titanker’s 4-foot 12 mm chain with U-lock, or KOHLBURG’s 5-foot chain when reach matters more than weight. For a lighter chain format, consider Kryptonite Keeper 785 or 712, or Titanker’s 6 mm, 3-foot model.
Choose NDakter when an 18 mm U-lock and 4-foot chain combination suits your wheel and anchor layout.
Quick Buying Checklist
- Confirm the complete dimensions against the available space.
- Verify model, accessory, connection, and appliance compatibility.
- Match capacity or output to the expected amount of use.
- Compare materials and care instructions with the maintenance routine.
- Check the included components before planning setup or first use.
- Confirm listed power, water, storage, or installation requirements where applicable.
Frequently Asked Questions
What is the primary benefit of an alarm disc lock?
Alarm disc locks offer an audible deterrent. If someone attempts to move your motorcycle with the lock engaged, a loud siren will sound, potentially scaring off thieves and alerting others nearby to the attempted theft.
How does a heavy-duty chain lock enhance security?
Heavy-duty chain locks provide robust physical security. Their thick, hardened steel construction makes them highly resistant to cutting or prying, offering a significant barrier against determined thieves.
What should I consider for portability in a motorcycle lock?
For portability, consider the weight and size of the lock. Disc locks are generally lighter and more compact than heavy chains. Some chain locks come with carry pouches, making them easier to transport.
Are reminder cables important for disc locks?
Yes, reminder cables are crucial for disc locks. They connect the lock to your handlebars, serving as a visual and tactile reminder that the lock is still engaged, preventing you from accidentally riding off with it.
What is the difference between a U-lock and a chain lock?
A U-lock uses a rigid metal shackle, while a chain lock uses a flexible series of metal links. U-locks are often very strong but can be less versatile in securing the bike to fixed objects. Chain locks offer more flexibility.
Final Words
Choosing the right motorcycle lock depends on your security needs and where you park. For maximum security, heavy-duty chains are recommended. Disc locks offer convenience and an audible alert, especially with reminder cables.
Consider a combination of locks for enhanced protection against theft.

