12 Best Bike Locks With Alarms for 2026 That Deter Thieves Instantly
You’re securing your ride with loud, 110–115 dB alarms that blast at the first sign of tampering. These top bike locks use motion sensors, remote control, and tough materials like hardened steel to stop thieves fast.
Whether it’s a smart chain, U-lock, or disc alarm, weatherproof designs keep you covered in any condition. With remote ranges up to 40 meters and multiple power options, you stay protected.
You’ll see which models offer the sharpest edge in real-world security.
Quick Overview
- Loud 110–115 dB alarms instantly deter thieves by triggering on movement, cutting, or tampering.
- Remote locking/unlocking with ranges up to 40 meters offers convenience and fast activation.
- Heavy-duty materials like 16mm hardened steel and manganese chains resist bolt cutters and leverage attacks.
- Weatherproof designs (IP55 to IP65 rated) ensure reliable performance in rain, sun, or extreme temperatures.
- Rechargeable USB-C or long-lasting battery options provide consistent power with low-battery alerts.
| Mengshen Bike Alarm Lock with Remote |  | Best Value | Alarm Volume (dB): 115 dB | Waterproof Rating: IP55 | Lock Type: Cable lock with alarm | VIEW LATEST PRICE | Read Our Analysis |
| Mengshen Bike Lock with Remote & Alarm |  | Most Versatile | Alarm Volume (dB): 115 dB | Waterproof Rating: IP55 | Lock Type: Cable lock with alarm | VIEW LATEST PRICE | Read Our Analysis |
| Bike Lock Heavy Duty Alarm (Red) |  | Best Heavy-Duty | Alarm Volume (dB): High-pitched (no specific dB) | Waterproof Rating: Weather Proof | Lock Type: U-lock | VIEW LATEST PRICE | Read Our Analysis |
| BANGTING 4Ft Bike Chain Lock with Alarm |  | Best Overall | Alarm Volume (dB): 110 dB | Waterproof Rating: IP65 | Lock Type: Chain lock | VIEW LATEST PRICE | Read Our Analysis |
| Heavy Duty Anti-Theft U Lock |  | Most Durable | Alarm Volume (dB): High-pitched (no specific dB) | Waterproof Rating: Weatherproof | Lock Type: U-lock | VIEW LATEST PRICE | Read Our Analysis |
| YOHOOLYO Motorcycle Disc Brake Alarm Lock |  | Best for Motorcycles | Alarm Volume (dB): 110 dB | Waterproof Rating: Water-resistant | Lock Type: Disc lock | VIEW LATEST PRICE | Read Our Analysis |
| Wsdcam 113dB Waterproof Bike Alarm |  | Best Sensitivity | Alarm Volume (dB): 113 dB | Waterproof Rating: IP55 | Lock Type: Wireless alarm (no physical lock) | VIEW LATEST PRICE | Read Our Analysis |
| WSDCAM Bike Alarm with Remote (2-Pack) |  | Best 2-Pack | Alarm Volume (dB): 113 dB | Waterproof Rating: IP55 | Lock Type: Wireless alarm (no physical lock) | VIEW LATEST PRICE | Read Our Analysis |
| Bike Chain Lock with Alarm & USB-C |  | Best Rechargeable | Alarm Volume (dB): 110 dB | Waterproof Rating: Waterproof | Lock Type: Chain lock | VIEW LATEST PRICE | Read Our Analysis |
| BANGTING 4FT Smart Alarm Bike Lock | | Smart Security | Alarm Volume (dB): 110 dB | Waterproof Rating: IP65 | Lock Type: Chain lock | VIEW LATEST PRICE | Read Our Analysis |
| Electric Scooter Lock with Alarm & Bag |  | Best Bundle | Alarm Volume (dB): 7 adjustable volumes (no max dB) | Waterproof Rating: Waterproof | Lock Type: Chain lock | VIEW LATEST PRICE | Read Our Analysis |
| Alarm Disc Lock Set for Motorcycles |  | Best Disc Lock | Alarm Volume (dB): 110 dB | Waterproof Rating: Waterproof | Lock Type: Disc lock | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Mengshen Bike Alarm Lock with Remote
If you need a reliable, no-key solution that keeps thieves away with a loud 115 dB alarm, the Mengshen Bike Alarm Lock with Remote is one of the best picks on the “12 Best Bike Locks With Alarms for 2026 That Deter Thieves Instantly” list—especially for riders who want quick access and strong security without fumbling with keys. You can lock and unlock it with the remote or a 4-digit password, and the signal reaches up to 40 meters.
It triggers instantly if cut, moved, or tampered with. The 31-inch cable works on bikes, scooters, or gates, and the IP55-rated build handles rain, sun, or cold.
You’ll hear a “Du” sound when locking or unlocking, and the LED flashes when the battery’s low—just replace the AAA cells.- Alarm Volume (dB):115 dB
- Waterproof Rating:IP55
- Lock Type:Cable lock with alarm
- Remote Control:Yes
- Power Source:3 AAA batteries
- Key Access:No keys (remote/password)
- Additional Feature:4-digit password protection
- Additional Feature:31-inch flexible cable
- Additional Feature:LED low battery indicator
Mengshen Bike Lock with Remote & Alarm
You’ll get serious peace of mind with the Mengshen Bike Lock if you own multiple types of gear—this one lock secures bikes, scooters, skateboards, and more. You can lock or unlock it two ways: via remote or 4-digit password—no keys needed.
The remote works up to 40 meters away, and with 256 code options, you’ve got flexibility. If someone tampers with it, the 115dB alarm blares instantly, triggered by movement, cutting, or disassembly.
It’s built tough: IP55-rated, weatherproof, and handles temps from -10°C to 60°C. Powered by 3 AAA batteries, it alerts you when power’s low.
Swap in fresh ones if the remote dims or range drops.- Alarm Volume (dB):115 dB
- Waterproof Rating:IP55
- Lock Type:Cable lock with alarm
- Remote Control:Yes
- Power Source:3 AAA batteries
- Key Access:No keys (remote/password)
- Additional Feature:256 password combinations
- Additional Feature:Dual locking methods
- Additional Feature:Audio lock/unlock feedback
Bike Lock Heavy Duty Alarm (Red)
Need serious security for your e-bike or fat-tire ride in high-risk areas? The Bike Lock Heavy Duty Alarm (Red) has your back.
Its 16mm hardened steel resists bolt cutters, leverage attacks, and hand tools, while the motion-activated, high-pitched alarm deters thieves instantly. Weatherproof and built to fit wide wheels up to 20″ x 4″, it’s perfect for e-bikes, scooters, or motorcycles.
The compact U-lock design offers versatile locking options, and the audible alarm gives peace of mind when your ride’s out of sight but within earshot. You’ll also get three key sets for convenience.
Tough, loud, and reliable—it’s security you can trust.- Alarm Volume (dB):High-pitched (no specific dB)
- Waterproof Rating:Weather Proof
- Lock Type:U-lock
- Remote Control:No
- Power Source:3 keys (no battery for alarm)
- Key Access:3 keys
- Additional Feature:16mm hardened steel
- Additional Feature:U-lock fits fat tires
- Additional Feature:3 keys included
BANGTING 4Ft Bike Chain Lock with Alarm
For cyclists who demand both toughness and instant deterrence, the BANGTING 4Ft Bike Chain Lock with Alarm stands out with its 110dB alarm that triggers at the slightest tampering, making it ideal for urban riders in high-theft areas. You get a durable 8mm manganese steel chain and a zinc alloy core that resist cutting and sawing.
Its IP65-rated wireless alarm handles rain and dust, while the scratch-resistant cover shields against rust and extreme temps. The 4ft length lets you secure two bikes or other gear like ladders and toolboxes.
With 3 keys, 2 remotes, and a USB-C charged alarm, it’s ready for long-term use. You’ll appreciate its reliability, versatility, and smart protection wherever you ride.- Alarm Volume (dB):110 dB
- Waterproof Rating:IP65
- Lock Type:Chain lock
- Remote Control:Yes (2 remotes)
- Power Source:Rechargeable (USB-C)
- Key Access:3 keys
- Additional Feature:Scratch-resistant polypropylene cover
- Additional Feature:USB-C rechargeable
- Additional Feature:Includes silicone cover
Heavy Duty Anti-Theft U Lock
What if your e-bike could fight back the moment a thief touches it? With the Heavy Duty Anti-Theft U Lock, it does.
Its motion-activated, high-pitched alarm instantly deters tampering, while the 16mm hardened stainless steel resists bolt cutters, leverage attacks, and hand tools. You’re covered in all weather—this lock’s fully weatherproof.
It fits wide 20×4 tires, making it ideal for e-bikes, scooters, and motorcycles. You get three keys, so backups are handy.
When you park in public, you’re not just locking—it’s like setting a guard. You gain real peace of mind knowing your ride’s protected, especially when it’s out of sight but still within earshot.
You’re ready.- Alarm Volume (dB):High-pitched (no specific dB)
- Waterproof Rating:Weatherproof
- Lock Type:U-lock
- Remote Control:No
- Power Source:3 keys (no battery for alarm)
- Key Access:3 keys
- Additional Feature:16mm stainless steel
- Additional Feature:Fits 20×4 tires
- Additional Feature:3 keys provided
YOHOOLYO Motorcycle Disc Brake Alarm Lock
Who says thieves stand a chance when your lock screams at 110 dB the moment it’s tampered with? You’re covered with the YOHOOLYO Motorcycle Disc Brake Alarm Lock.
Its 7 mm pin adjusts 360 degrees, locking securely into place. The motion sensor gives a 5-second delay before triggering, giving you time to disarm it.
Made of rugged metal, it’s rust-resistant, waterproof, and built to survive crashes and harsh weather. You get 6 internal and 6 backup batteries, plus 2 keys and an Allen wrench.
Everything stows neatly in the included carry pouch. It’s tough, loud, and ready to guard your bike, scooter, or dirt bike without breaking a sweat.- Alarm Volume (dB):110 dB
- Waterproof Rating:Water-resistant
- Lock Type:Disc lock
- Remote Control:No
- Power Source:6 internal + 6 backup batteries
- Key Access:2 security keys
- Additional Feature:360-degree adjustable pin
- Additional Feature:6 backup batteries
- Additional Feature:Includes carry pouch
Wsdcam 113dB Waterproof Bike Alarm
The Wsdcam 113dB Waterproof Bike Alarm stands out for riders who demand loud, reliable protection across all weather conditions. You’ll appreciate its IP55 rating, ensuring it handles rain or shine.
With 7 sensitivity levels and 3 volume options, you customize alerts to your environment. It triggers instantly on vibration, blasting a 113dB alarm to scare off thieves.
The wireless remote gives you control up to 66 ft away, plus a vehicle search function helps locate your ride fast. It’s energy-efficient, so battery life lasts.
Built tough, it exceeds industry standards and works on bikes, e-bikes, scooters, and motorcycles. You get mature sensor tech that won’t quit when you need it most.- Alarm Volume (dB):113 dB
- Waterproof Rating:IP55
- Lock Type:Wireless alarm (no physical lock)
- Remote Control:Yes
- Power Source:Not specified
- Key Access:No keys (wireless alarm only)
- Additional Feature:7-level sensitivity adjust
- Additional Feature:3-level volume adjust
- Additional Feature:Vehicle search function
WSDCAM Bike Alarm with Remote (2-Pack)
Need a versatile, ear-piercing alarm that doesn’t just guard your bike but deters thieves the moment they lay a hand on it? The WSDCAM Bike Alarm with Remote (2-Pack) delivers up to 113dB of loud, attention-grabbing sound with 7 sensitivity levels and 3 volume settings you can customize.
Its wireless remote works up to 66 feet away, helping you locate your ride fast. Mount it easily with included straps or adhesive, and rely on its IP55 rating to hold up in rain or shine.
Use it on bikes, scooters, cars, or luggage—anywhere vibration means danger. Two alarms mean double protection.- Alarm Volume (dB):113 dB
- Waterproof Rating:IP55
- Lock Type:Wireless alarm (no physical lock)
- Remote Control:Yes
- Power Source:Not specified
- Key Access:No keys (wireless alarm only)
- Additional Feature:2-pack value set
- Additional Feature:Double-sided tape install
- Additional Feature:3 bell options
Bike Chain Lock with Alarm & USB-C
Looking for a bike lock that packs serious security without the bulk? This Bike Chain Lock with Alarm & USB-C has got you covered.
It’s lightweight, at just 2 pounds, and packs a loud 110dB alarm that triggers on motion. With two sensitivity modes and three volume levels, you stay in control.
The alloy steel chain has a reinforced fabric sleeve for durability and flexibility, while the silicone-covered alarm resists impacts and scratches. You’ll love the convenience of remote lock/unlock and USB-C charging—good for up to 60 days standby.
It’s waterproof, rugged, and perfect for bikes, scooters, or gates. Plus, it comes with keys, remotes, and a storage bag—everything you need right out the box.- Alarm Volume (dB):110 dB
- Waterproof Rating:Waterproof
- Lock Type:Chain lock
- Remote Control:Yes (2 remotes)
- Power Source:Lithium polymer (USB-C rechargeable)
- Key Access:3 keys
- Additional Feature:60-day standby battery
- Additional Feature:Reinforced fabric sleeve
- Additional Feature:Rechargeable lithium battery
BANGTING 4FT Smart Alarm Bike Lock
Want serious protection for your e-bike or scooter without sacrificing convenience? The BANGTING 4FT Smart Alarm Bike Lock’s 110dB remote-controlled alarm shocks thieves the moment they tamper with it.
You’ll appreciate the physical key access—tamper-proof and reliable—while the alarm system stays separate for added security. Its 8mm manganese steel chain resists bolt cutters, and the reinforced zinc alloy lock head shrugs off drills.
With IP65 weather resistance, a scratch-free sleeve, and a 1.2m versatile fit for bikes, scooters, or gates, you’re covered anywhere. Everything from two remotes to a USB-C cable and storage bag is included—just charge, lock, and ride.- Alarm Volume (dB):110 dB
- Waterproof Rating:IP65
- Lock Type:Chain lock
- Remote Control:Yes (2 remotes)
- Power Source:Rechargeable (USB-C)
- Key Access:3 keys
- Additional Feature:Tamper-proof key access
- Additional Feature:Drilling-resistant lock body
- Additional Feature:Scratch-free chain sleeve
Electric Scooter Lock with Alarm & Bag
Who wouldn’t want their e-scooter secured with a lock that screams at thieves the moment it’s tampered with? This Electric Scooter Lock with Alarm & Bag does just that—its motion-sensitive alarm blasts at seven adjustable volumes, scaring off crooks fast.
You’ll arm and disarm it easily with the included remote, adding smart convenience to solid security. Built from heavy-duty alloy steel, the 94 cm chain laughs off cutting and sawing.
It’s tough on weather, too. Toss it in the waterproof silicone bag to shield against rain and scratches, while the inner mesh pocket holds keys or your phone.
Set includes three keys, remote, and bag—total peace of mind on the go.- Alarm Volume (dB):7 adjustable volumes (no max dB)
- Waterproof Rating:Waterproof
- Lock Type:Chain lock
- Remote Control:Yes
- Power Source:Not specified
- Key Access:3 keys
- Additional Feature:7 adjustable alarm volumes
- Additional Feature:Waterproof storage bag
- Additional Feature:Inner mesh pocket
Alarm Disc Lock Set for Motorcycles
The Alarm Disc Lock Set for Motorcycles stands out for riders who demand a rugged, ready-anywhere theft deterrent with instant 110 dB alarm response. You slap it onto your disc brake, press once, and you’re locked in with loud, attention-grabbing security.
It’s built tough—forged steel body, 6mm pin, weather-resistant—so rain or shine, it holds strong. The alarm screams at vibrations, scaring off would-be thieves fast.
You get two keys, an Allen wrench, reminder cable, and plenty of batteries. It fits most motorcycles, scooters, e-bikes, even electric cars with disc brakes up to 6mm.
You stay protected, alert, and ready—anywhere, anytime.- Alarm Volume (dB):110 dB
- Waterproof Rating:Waterproof
- Lock Type:Disc lock
- Remote Control:No
- Power Source:6 internal + 6 backup batteries
- Key Access:2 security keys
- Additional Feature:Reminder cable included
- Additional Feature:6mm forged steel pin
- Additional Feature:One-press alarm activation
Factors to Consider When Choosing Bike Locks With Alarms
You’ll want to check the alarm’s sensitivity levels so it triggers when needed but doesn’t go off unnecessarily. Make sure the power source type suits your charging habits and that the lock has solid weather resistance for year-round use.
Look into the locking mechanism, remote range, and how each feature fits your daily ride.
Alarm Sensitivity Levels
Wondering how sensitive your bike alarm should be? You’ll want to adjust it based on your environment—too high, and wind or passing cars set it off; too low, and thieves might tamper without triggering it.
Look for locks with multiple sensitivity levels, usually around seven, so you can fine-tune the response. This flexibility helps whether you’re locking up your bike, scooter, or motorcycle, and makes a big difference between indoor and outdoor use.
Adjustable sensitivity pairs well with volume controls, letting you choose a quiet alert in a garage or a loud blare on a busy street. You’re in control—balance strong deterrence with fewer false alarms.
A well-tuned sensor won’t nag you unnecessarily but will still scare off anyone messing with your ride.
Power Source Type
Adjusting alarm sensitivity keeps false alarms under control, but just as important is choosing the right power source to keep that alarm ready when you need it. Most bike lock alarms run on 3 AAA batteries and include a low-battery indicator—like a one-second LED flash—to warn you when power’s fading.
Some models swap disposables for rechargeable batteries, often with USB-C charging cables, so you’re not constantly buying new ones. A few offer internal batteries lasting up to 60 days in standby.
If you’re often on the go, look for locks with backup or multiple battery sets to extend uptime. Don’t forget the remote—some require separate power, and if its LED’s dark, it’s time for a change.
Picking the right power source means your alarm won’t fail when it matters most.
Weather Resistance Rating
How well does your bike lock hold up when rain turns into a downpour or sweat and grime build up over time? You’ll want one with a solid weather resistance rating.
Look for IP55 or IP65—these aren’t just random numbers. An IP55 rating means your lock can handle low-pressure water jets from any angle, perfect for light rain and daily grime.
If you ride in tougher conditions, go for IP65, which adds full dust resistance and stronger water protection. That matters when you’re caught in a storm or rinsing off your gear.
Many of these locks also include rust-resistant materials and sealed casings to fend off corrosion. Plus, check the operating range; some work reliably from -10°C to +60°C, so whether it’s a scorching summer or freezing winter, your lock won’t quit.
Don’t skip this—weatherproofing keeps your alarm sharp and your bike safe.
Locking Mechanism Options
Why fumble with keys when you can unlock your bike lock with a click or a code? You’ve got two main options: remote control or a 4-digit password—both keyless and quick.
The remote lets you arm or disarm your lock from a distance, while the code option gives you backup access if you lose the remote. Most systems are intuitive, switching between modes with ease.
You’ll appreciate the simplicity, especially in bad weather or low light. These locks pair with loud 110–115 dB alarms that trigger on motion, vibration, or tampering like cutting.
Some even offer 7 sensitivity levels, so you can fine-tune how easily the alarm goes off. No more weak mechanisms or guesswork—just secure, reliable access that keeps thieves on edge.
Choose the method that fits your ride and routine.
Remote Control Range
Ever wonder how far you can be and still disarm your bike lock with the remote? Most models work reliably up to 40 meters (about 132 feet), though some offer only 20 meters (66 feet).
You’ll arm and disarm your lock wirelessly within this range, so you can skip keys entirely—just press and go. But keep in mind, real-world conditions like walls, weather, or metal structures can cut into that distance.
If your remote’s LED dims or response slows, it’s likely time to replace the battery. A weak signal doesn’t just frustrate—it could leave you stranded.
For maximum reliability, pick a model with strong range and test it in your usual parking spots. Don’t assume specs match reality.
Always factor in the environment where you ride and lock up.
Noise Decibel Output
You’ve got the remote working from across the street, but what happens when someone tries to tamper with your bike? The alarm’s decibel output makes all the difference.
Most alert at 110–115 dB—loud enough to cut through city noise and draw attention fast. If the sound hits 115 dB, it’s harder to ignore, but might be overkill in quiet neighborhoods.
Some locks let you adjust the volume, so you can balance effectiveness and discretion based on where you’re parked. Higher decibels usually mean longer, more persistent alarms, boosting your chances of someone noticing.
Ambient noise like traffic can dull the perceived loudness, so real-world testing helps you judge true performance. Don’t assume max volume is always best—pick a lock whose alarm fits your usual riding and parking environments without drawing unnecessary attention.
Compatibility With Vehicles
How well does your alarm lock actually fit your bike? You need a lock that matches your wheel size—whether it’s 20×4 wide tires or standard rims—so it secures properly without gaps.
Make sure the mechanism fits common access points like disc brake mounts or frame anchor spots without rubbing tires or drivetrain parts. Check the chain length and thickness to enable two-point locking on larger frames or multiple attachment areas.
If you ride in rain or extreme heat, confirm the lock has an IP65 or IP55 rating and works between -10°C and +60°C. For convenience, pick one with remote access up to 66 feet and a 4-digit or 256-code combo that fits how you use your bike—daily commute or weekend rides.
Compatibility ensures both security and ease.
Frequently Asked Questions
Can Bike Alarm Locks Work in Extreme Weather?
Yes, they work in extreme weather. You’ll find most are sealed against moisture and dust, so rain, snow, or heat won’t stop the alarm from sounding when triggered.
Just check the specs to make sure yours is built for harsh conditions.
Do Alarm Locks Require Smartphone Connectivity?
Oh, sure, because your bike lock *totally* needs to check its social media—no, most alarm locks don’t require smartphone connectivity. You can still scare thieves the old-fashioned way, without Wi-Fi or updates.
Are Replacement Remotes Available for Bike Alarms?
Yes, you can get replacement remotes for most bike alarms. Just contact the manufacturer or check their website.
They’ll usually sell them separately, so you’re not stuck if yours goes missing or stops working—easy fix.
How Do I Test My Bike Alarm Regularly?
You test your bike alarm weekly—press the sensor gently, like a thief’s touch, and listen for the sharp cry of the siren. Check the remote’s response, ensure lights flash, and replace weak batteries fast.
It stays loud, awake, and ready—your steel watchdog nipping at shadows.
Can I Use the Same Alarm for Multiple Bikes?
Yes, you can use the same alarm for multiple bikes, but you’ll need to move it each time. It’s not ideal—setup takes effort, and you might forget.
For better protection, get a separate alarm for each bike so both stay secured without hassle.
Conclusion
You’re biking home, heart pounding as you spot your locked ride—still there, untouched. That alarm didn’t just screech at shadows; it scared off a thief in 3 seconds flat.
With 67% of attempts deterred by audible alarms, think of your lock as a guard dog: silent until it isn’t. Choose smart, stay bold.
That *beep-beep-beep*? That’s peace of mind, every night.
