A strong motorcycle disk lock alarm combines a physical brake-disc barrier with a motion-triggered warning, making it suited to riders who want portable security for outdoor, apartment, or roadside parking. The 10 options here range from compact 110 dB locks with reminder cables to reinforced models with 14 mm locking shafts, stainless steel construction, pre-alarm warnings, LED alerts, or approved security credentials. Fit matters as much as alarm volume: pin diameter, rotor-hole size, and available clearance determine whether a lock works with your motorcycle.
Battery arrangements, carry pouches, keys, and weather-resistant construction also affect daily convenience. Use the comparisons below to match the lock’s physical dimensions and warning behavior to your motorcycle, parking environment, and preferred carrying routine.
The best motorcycle disk lock alarm depends on the balance you need between fit, deterrence, and portability. URBAN UR14S offers a 14 mm stainless steel shaft, double locking, 120 dB alarm, LED, and warning alert for riders prioritizing reinforced construction. URBAN UR6 and RADIKAL RK9 add warning pre-alerts and LED signals in more compact formats.
For straightforward everyday use, YOHOOLYO, Mathtoxyz, NEIKO, KRASER, and RUBY.Q provide 110 dB alarms, while Kryptonite and TOKCKYBL provide 120 dB options.
Motorcycle Disc Lock Alarms: A Comparison
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, TOKCKYBL, urban, RUBY.Q, Kryptonite, Mathtoxyz, KRASER, NEIKO, and RADIKAL.
The shortlist includes products such as YOHOOLYO Alarm Disc Lock Motorcycle Disc Brake Lock Anti-Theft Waterproof 110 dB 7mm Pin, TOKCKYBL Rechargeable Motorcycle Disc Lock with 120dB Alarm, and URBAN UR6 Hi-Tech Motorcycle Disc Lock with Smart Alarm. 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 Motorcycle Disk Lock Alarm
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: Everyday motorcycle security.
This all-metal YOHOOLYO alarm disc lock offers robust anti-theft protection with a loud 110 dB siren. Its 7mm pin is designed to fit most motorcycle, bicycle, and scooter brake discs, providing versatile security for various two-wheeled vehicles.
Constructed entirely from metal, this lock ensures sturdiness and sustainability for long-term use. The 110 dB alarm sound acts as a significant deterrent, while the 7mm pin allows for 360-degree locking in any position. It's an ideal choice for motorcycles, bicycles, and scooters, offering double assurance against theft.
Product Details
| Brand | YOHOOLYO |
|---|---|
| Compatible Devices | motorcycles, bicycles, scooters |
| Item Weight | 12.32 ounces |
| Manufacturer | YOHOOLYO |
| Model Number | LK603 |
Pros
- Sturdy and sustainable all-metal construction
- Loud 110 dB anti-theft alarm
- 7mm pin fits multiple vehicle types
- Can be fixed in any position
Cons
- Reminder cable may be an additional purchase
Ideal for daily use on motorcycles, bicycles, and scooters, this lock provides a loud audible deterrent. Ensure it fits your specific disc brake rotor size for optimal security.
2. Rechargeable Motorcycle Disc Lock with 120dB Alarm
Best for: Rechargeable motorcycle security.
The TOKCKYBL rechargeable motorcycle disc lock features a powerful 120dB alarm system designed by professional engineers for complete anti-theft security. Engineered for riders, it offers a robust solution to protect your motorcycle.
This lock is engineered by professionals with a focus on complete motorcycle anti-theft systems. While specific features like pin size or material are not detailed, its rechargeable nature and 120dB alarm aim to provide a strong deterrent against theft. It is compatible with motorcycles.
Product Details
| Brand | TOKCKYBL |
|---|---|
| Compatible Devices | Motorcycles |
| Manufacturer | TOKCKYBL |
| Model Number | TKB-MTCBJS-RED |
| Warranty Description | 2 Year Manufacturer |
Pros
- Rechargeable for convenience
- Powerful 120dB alarm
- Engineered by professionals
- Focus on complete anti-theft systems
Cons
- Specific pin size and material details are not provided
A good option for motorcycle owners seeking a rechargeable security solution with a loud alarm. Verify compatibility with your specific motorcycle model's disc brake rotor.
3. 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 value motorcycle security.
The URBAN UR6 Hi-Tech Motorcycle Disc Lock offers smart security with a 120dB alarm and unique WARNING pre-alert feature. This lock allows you to choose between using it with or without the alarm, providing flexible protection.
This lock boasts A+ sensitivity and an LED light signal, with a unique WARNING pre-alert system that detects theft attempts before the 120 dB alarm sounds. The 6mm pin is designed to fit most motorcycle and bike brake discs. It's constructed from metal and reinforced nylon, offering a durable and high-value security solution.
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
- Smart WARNING pre-alert feature
- A+ sensitivity and LED light signal
- 120dB alarm can be used with or without
- 6mm pin fits most brake discs
Cons
- May not fit larger disc brake holes without an adapter
Best for riders seeking advanced features like a pre-alert system and flexible alarm options. Ensure the 6mm pin is suitable for your motorcycle's brake disc holes.
4. Alarm Disc Lock, 110 dB 7mm Pin 5ft Reminder Cable with Carry Pouch
Best for: Everyday Use.
This RUBY.Q alarm disc lock provides anti-theft protection with a 110 dB alarm that activates upon sensing vibration or shock. It includes a 5ft reminder cable and a carry pouch for convenient storage and transport.
Constructed from alloy steel, this lock is designed to protect your motorcycle or bicycle when parked. The 110 dB alarm is triggered by any vibration or shock, acting as a deterrent. The set includes the lock, keys, a reminder cable, a storage bag, and batteries, offering a comprehensive package for securing your vehicle.
Product Details
| Brand | RUBY.Q |
|---|---|
| Color | 1pcs Black |
| Included Components | 2pcs security keys, 1pcs reminder cable, 1pcs storage bag, 6pcs internal batteries, 1pcs Black Alarm disc lock set |
| Item Weight | 0.39 kg |
| Manufacturer | RUBY.Q |
| Material | Alloy Steel |
| Model | LK-603 |
Additional Product Information
| Model Number | LK-603 |
|---|---|
| Recommended Uses | Securing vehicles |
| Special Feature | Alarm |
| Style Name | Modern |
Pros
- 110 dB anti-theft alarm
- Includes reminder cable and carry pouch
- Alloy steel construction
- Comes with batteries and backup batteries
Cons
- Alarm activation relies solely on vibration sensing
A practical choice for securing motorcycles and bicycles with an audible alarm. The included reminder cable is a useful addition for preventing accidental damage.
5. Kryptonite Motorcycle Alarm Disc Lock, 120dB Anti-Theft Brake Pin Lock
Best for: Heavy-duty motorcycle security.
The Kryptonite Motorcycle Alarm Disc Lock features a loud 120dB motion-sensitive siren and heavy-duty construction for robust anti-theft protection. Its weather-proof electronics ensure reliable performance in various riding conditions.
Built with a rugged zinc diecast body and a 6mm hardened steel locking pin, this lock fits rotors up to 6.5mm thick. The integrated 120dB siren activates instantly upon tampering, providing a significant auditory deterrent. Its auto-arming convenience and weather-proof design make it suitable for year-round protection.
Product Details
| Brand | Kryptonite |
|---|---|
| Color | Black |
| Included Components | Locks |
| Item Dimensions | 9 x 6 x 2 inches |
| Item Weight | 120 g |
| Dimensions | 9 x 6 x 2 inches |
| Manufacturer | Kryptonite |
Additional Product Information
| Part Number | K004776 |
|---|---|
| Manufacturer Warranty Description | Manufacturer Warranty |
| Material | Alloy Steel |
| Model | Kryptolok Alarm Disc Lock – 6Mm-Blk/Sil – New!! |
| Model Number | 004776 |
| Recommended Uses | Motorcycle |
| Special Feature | Alarm |
| Style Name | Modern |
| Additional Information | Important Information Wattage 900 milliamp_hours |
Pros
- Loud 120dB motion-sensitive alarm
- Heavy-duty zinc diecast body
- 6mm hardened steel pin
- Weather-proof electronics
Cons
- Pin thickness may limit compatibility with some rotors
Ideal for motorcycle, scooter, or e-bike owners prioritizing a loud alarm and durable build. Ensure the 6mm pin is compatible with your vehicle's disc brake rotor thickness.
6. 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: Waterproof motorcycle alarm.
This Mathtoxyz motorcycle alarm disc brake lock offers enhanced security with a 110dB alarm system and built-in sensors that detect shocks and movements. It is designed to be waterproof, ensuring protection in various weather conditions.
The lock features sensors that detect shocks and movements, triggering a 110dB alarm to deter potential thieves. Its waterproof design ensures reliable operation regardless of weather. The alarm is activated by pressing the lock button, with a confirmation beep after 5 seconds, making it easy to use for securing motorcycles, bikes, and scooters.
Product Details
| Brand | Mathtoxyz |
|---|---|
| Compatible Devices | Motorcycles |
| Manufacturer | Mathtoxyz |
| Model Number | MA-CS-B |
Pros
- 110dB alarm system
- Waterproof construction
- Detects shocks and movements
- Easy to activate with a button press
Cons
- Specific pin size is not detailed
A suitable option for riders seeking a waterproof alarm disc lock with motion detection. Its ease of use makes it a convenient accessory for securing your motorbike or scooter.
7. URBAN UR14S Approved Motorcycle Disc Lock with Smart Alarm | 120dB, LED, Warning, A+ Sensitivity, X2 ON | SRA & Sold Secure Gold Tested Anti-Theft for Motorbike | 14mm Double Locking, Stainless Steel
Best for: High-security motorcycle lock.
The URBAN UR14S Approved Motorcycle Disc Lock sets a high standard for security with its 14mm double locking stainless steel shaft and SRA & Sold Secure Gold testing. It features a 120dB smart alarm with a warning function.
Constructed from high-strength stainless steel, this lock boasts a 14mm locking shaft and an innovative double locking system that secures the shaft at both the lock and its base, significantly increasing resistance. It has passed rigorous tests and achieved SRA homologation, offering maximum security. The lock can be used with or without its hi-tech alarm system.
Product Details
| Brand | urban |
|---|---|
| Color | Brushed Stainless Steel |
| Included Components | Disc Lock, Keys, Alarm Module, Battery, Allen Wrench, Carrying Pouch |
| Item Dimensions | 3.54 x 1.57 x 2.36 inches |
| Item Weight | 726 g |
| Dimensions | 3.54 x 1.57 x 2.36 inches |
| Manufacturer | Urban Security |
Additional Product Information
| Part Number | UR14S |
|---|---|
| Material | Pure Stainless Steel |
| Model | UR14S |
| Model Number | UR14S |
| Recommended Uses | High-End Motorcycle Anti-theft Security |
| Special Feature | #1 in Germany, Double Locking Mechanism, Hi-Tech Alarm System, Pure Stainless Steel |
| Style Name | 14mm INOX |
Pros
- 14mm double locking stainless steel shaft
- SRA & Sold Secure Gold approved
- 120dB smart alarm with warning
- High-strength stainless steel construction
Cons
- Heavier due to robust stainless steel construction
For riders prioritizing maximum security and durability, this SRA-approved lock is an excellent choice. Its substantial build is ideal for high-risk environments, but consider its weight.
8. KRASER WA6Y Alarm Disc Lock, Reinforced Disc Brake Lock with 3 keys (others 2), Heavy Duty Anti-Theft Motorcycle Lock with Alarm,110dB, Weather-Resistant, Reminder Cable, Pouch, Motorbike Moped E-Bike
Best for: Visible deterrent motorcycle lock.
The KRASER WA6Y Alarm Disc Lock offers reinforced heavy-duty protection with a powerful 110dB alarm and a high-visibility yellow/black design. It includes three keys and a reminder cable for added convenience and security.
This weather-resistant disc brake lock features a reinforced design and a loud 110dB alarm that activates with 3 warning beeps followed by a louder alarm if tampering continues. Its striking yellow/black color makes it highly visible, acting as a deterrent. The lock is made of metal and includes a reminder cable and pouch.
Product Details
| Brand | KRASER |
|---|---|
| Color | Yellow/Black |
| Included Components | Anti-theft disc lock with alarm, 2 pack batteries, 3 keys, Allen key and backpack |
| Item Dimensions | 3.54 x 2.36 x 1.57 inches |
| Dimensions | 3.54 x 2.36 x 1.57 inches |
| Manufacturer | Equipmotor Locomotion Direct |
| Part Number | WA6Y |
Additional Product Information
| Material | Metall |
|---|---|
| Model | WA6Y |
| Model Number | WA6Y |
| Recommended Uses | Vehicles |
| Special Feature | Powerful Alarm, Reinforced Quality Materials, Visible and Deterrent |
| Style Name | Yellow/Black |
Pros
- Powerful 110dB alarm
- High-visibility yellow/black color
- Reinforced heavy-duty construction
- Includes 3 keys and reminder cable
Cons
- Alarm activation may be sensitive to minor bumps
A great option for those wanting a visible and loud deterrent for their motorbike, moped, or e-bike. The bright color serves as an immediate visual warning to potential thieves.
9. NEIKO 52908A Motorcycle Locks Anti Theft with Alarm, Motorcycle Disc Lock with Alarm, Disk Lock Anti-Theft Motion Sensor, Security Lock Brake, Universal Alarm Lock for Motorcycles, Bicycles & More
Best for: Universal motorcycle alarm lock.
The NEIKO 52908A Motorcycle Disc Lock features a 110 dB alarm with a 5-second delayed motion sensor, providing robust anti-theft protection. Made entirely of metal, it is rust-resistant, weather-resistant, and waterproof.
This durable, all-metal disc lock is designed for universal use on motorcycles, bicycles, and scooters. Its 110 dB alarm activates upon detecting shock and movement after a 5-second delay, offering effective deterrence. The lock can be easily set at 360 degrees with a simple button press, ensuring a secure fit.
Product Details
| Brand | NEIKO |
|---|---|
| Compatible Devices | Motorcycles, Bicycles, Scooters, Mopeds |
| Manufacturer | NEIKO |
| Model Number | 52908A |
| Additional Information | Important Information Proposition 65 Warning for California Consumers WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
Pros
- 110 dB alarm with motion sensor
- Rust, weather, and waterproof
- Universal fit for multiple vehicle types
- Easy 360-degree setting
Cons
- 5-second delay might allow initial tampering
Suitable for a wide range of vehicles including motorcycles, bicycles, and scooters, this lock offers versatile protection. Consider the 5-second delay when assessing its suitability for your needs.
10. RADIKAL RK9 Disc Lock with Premum Alarm 120db ON/Off, LED Night Alert, Warning Pre-Alarm, 100% Waterproof, Full Metal Heavy Duty Brake Lock Universal Anti Theft Device for Motorcycle, E-Bike, Bicycle
Best for: Premium motorcycle deterrent.
The RADIKAL RK9 Disc Lock provides premium anti-theft protection with a 120 dB alarm, LED night alert, and a warning pre-alarm system. This 100% steel, heavy-duty brake lock is fully waterproof for reliable security.
This compact and effective motorcycle lock combines physical locking with an intelligent warning function that first emits a pre-alarm before the full 120 dB alarm sounds. Constructed from hardened steel, it offers robust deterrence. The lock also features an LED night alert and is 100% waterproof, ensuring performance in all conditions.
Product Details
| Brand | RADIKAL |
|---|---|
| Color | Red |
| Included Components | Keys, padlock and backpack |
| Item Dimensions | 2.76 x 2.36 x 1.18 inches |
| Dimensions | 2.76 x 2.36 x 1.18 inches |
| Manufacturer | Equipmotor Locomotion Direct |
| Part Number | RK9NR |
Additional Product Information
| Material | Metal Hardened steel |
|---|---|
| Model | RK9 |
| Model Number | RK9 |
| Recommended Uses | Motorcycle Lock Security |
| Special Feature | Premium Alarm System with Warning Pre-Alarm |
| Style Name | Alarm |
Pros
- 120 dB alarm with warning pre-alarm
- LED night alert feature
- 100% steel, heavy-duty construction
- Fully waterproof design
Cons
- Compact size may not fit all disc brake rotor gaps
An excellent choice for motorcycle, e-bike, or bicycle owners seeking a powerful deterrent with smart features. Verify its fit on your specific brake disc rotor.
What Buyers Often Overlook
Sizing and rotor fit: choose the pin before the alarm volume
The locking pin must fit the brake-disc holes and available rotor clearance, so verify your motorcycle’s disc dimensions before choosing by decibel rating. The URBAN UR6 uses a 6 mm pin and notes that it fits most motorcycle and bicycle brake discs, while Kryptonite’s 6 mm hardened steel pin fits rotors up to 6.5 mm thick. YOHOOLYO and RUBY.Q use 7 mm pins, and URBAN UR14S uses a substantially larger 14 mm shaft with a double-locking system.
A larger shaft can support a more reinforced design, but it may not pass through every rotor opening. The UR14S weighs 726 g, compared with the lighter 12.32-ounce YOHOOLYO, so riders should also account for carrying convenience.
Check hole size, rotor thickness, and clearance around the caliper before ordering.
The Key Product Trade-Off
Alarm behavior, materials, and daily failure points
Warning stages and construction change how a lock behaves during everyday handling and attempted tampering. URBAN UR6, URBAN UR14S, KRASER WA6Y, and RADIKAL RK9 include warning alerts before or alongside their main alarms; KRASER describes three warning beeps followed by a longer, louder alarm if manipulation continues. Most listed alarms reach 110 or 120 dB, but loudness alone does not establish physical resistance.
Materials range from metal and reinforced nylon in the UR6 to alloy steel in RUBY.Q, hardened steel in RADIKAL RK9, and stainless steel in UR14S. Weather-focused choices include waterproof or weather-resistant descriptions on several models, including Kryptonite’s weather-proof electronics module and RADIKAL’s 100% waterproof claim.
Batteries remain a practical failure point: RUBY.Q includes internal and backup button batteries, while other models specify CR2, button-cell, or rechargeable arrangements.
Best Motorcycle Disk Lock Alarm: 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?
Choose URBAN UR14S if your motorcycle accepts a 14 mm shaft and you want stainless steel, double locking, a 120 dB alarm, LED, warning features, and SRA and Sold Secure Gold testing claims supplied for the product. Choose URBAN UR6 or RADIKAL RK9 when a compact lock with warning pre-alerts and LED signaling better suits daily carrying. Choose Kryptonite or TOKCKYBL for a listed 120 dB alarm, with Kryptonite adding a 6 mm hardened steel pin and weather-proof electronics.
For a reminder cable and pouch, YOHOOLYO, Mathtoxyz, RUBY.Q, and KRASER are practical candidates. Select NEIKO for broad motorcycle, bicycle, scooter, and moped compatibility, but confirm rotor fit before purchase.
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
How loud is a typical motorcycle disc lock alarm?
Most motorcycle disc lock alarms range from 110 dB to 120 dB. This decibel level is comparable to a loud siren or a rock concert, designed to be startling enough to deter thieves and alert nearby individuals to a potential theft attempt.
What is a reminder cable for a disc lock?
A reminder cable is a brightly colored cord that attaches to your disc lock and handlebars. Its purpose is to prevent you from accidentally riding off with the lock still engaged, which could cause damage to your motorcycle and the lock.
Are waterproof disc lock alarms effective in all weather?
Yes, disc lock alarms rated as waterproof are designed to withstand rain, dust, and moisture. This ensures their functionality and longevity, even when exposed to various weather conditions, making them reliable for year-round security.
What does 'SRA' or 'Sold Secure Gold Tested' mean for a disc lock?
These are independent security ratings. SRA is a French standard, while Sold Secure Gold is a UK standard. Achieving these ratings indicates the lock has undergone rigorous testing and meets high security benchmarks against various attack methods.
How do motion sensor alarms on disc locks work?
Motion sensor alarms are designed to detect movement or vibration. If the lock is tampered with or the motorcycle is moved, the sensor triggers the alarm. This provides an extra layer of security beyond just physical resistance.
Final Words
For general protection, models with a 110-120 dB alarm and a reminder cable are effective. Consider higher-rated, waterproof options for enhanced security in all conditions, especially if your motorcycle is stored outdoors.
