The Best Bike Lock with Alarm

Today I’ll be reviewing the best bike lock alarms on the market. With bicycle theft on the rise, there’s never been a better time to use an alarmed bike lock.

Unfortunately, there isn’t a bike lock out there that’s uncuttable, which means you need to find other ways of increasing your bike’s security. Using one of the best bike locks with an alarm is a great place to start.

Not only will an alarmed bike lock give you added peace of mind whilst you’re away from your bike, but its alarm feature should do a great job scaring off thieves.

Table of Contents
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    Overview - The Best Bike Lock With Alarm

    After testing these three alarmed locks, it’s hard to pick a winner. 

    Based on its practicality, security and price the Oxford Alarm-D Max Duo is the best bike lock with alarm. It’s super easy to operate and has almost all of the features you’d expect to see from a high-end bike lock.

    If you’re looking for a more secure bike lock, the ABUS 770A SmartX boasts the Sold Secure Gold rating, however, this high tech D-lock sells at an eye-watering price.

    This being said, for the keyless operation and location saving feature, you may consider the price more reasonable. 

    Below you’ll find everything there is to know about the best alarmed bike locks. Have a read!

    Why You Should Use a Bike Lock With an Alarm

    Most of our valuables now feature added security measures. Cars – alarms, homes – alarms, phones – tracking & passcodes, but when it comes to your bicycle there really hasn’t been a whole lot you could do to increase its security. Until now.

    Bike locks with alarms are slowly making their way onto the market and this gives you an exciting and accessible opportunity to up your bike’s security and keep thieves at bay.

    It would be hugely beneficial for your bike’s security if you also learnt how to lock it properly, so if you haven’t already, have a read.

    The Best Bike Locks with alarms Top 3
    Three impressive bike locks with alarms, but which is best?

    Most of the time using a top-quality bike lock is all that’s needed to deter thieves, as they’ll normally just look for a less secure bike. However, if your bike is valuable to you it’s definitely a good idea to use an alarmed bike lock.

    The best bike locks with alarms will give thieves and chancers a deafening surprise when they decide to fiddle with your bicycle. A loud alarm will also attract the attention of the public and will increase the chance of the thief being caught if they stupidly decide to stick around.

    So, now you know how an alarmed bike lock can help you, let’s take a look at the best alarmed bike locks on the market.

    Comparison Table

    Below I’ve put together a simple comparison table, a much more detailed review of each lock can be found below the table.

    Preview
    Best Alarmed Bike Lock
    Oxford Unisex's D Duo Max Alarmed Shackle, Black/Blue, One Size
    ABUS Unisex's Bordo Alarm 6000/90 Plus Black Padlock, 90 cm
    ABUS 770A SmartX Bicycle Lock with Bluetooth and Alarm (100 db) - iOS & Android - Security Level 15, Unisex - Adults, Black with USKF holder, HB300
    Model
    Oxford Alarm-D Max Duo
    ABUS Bordo Alarm 6000A
    ABUS 770A Smart-X
    Pros
    Ear piercing 120dB alarm, Hardened steel shackle, great mounting bracket, comes with extension cable, cheapest bike lock with alarm, super easy to operate
    Increased versatility thanks to flexible shackle, loud 100dB alarm, simple to operate, fantastic mounting bracket, folds down into a small package, capable of securing multiple bikes, hardened cut-proof rivets
    High tech keyless operation, option to add multiple users so that friends can access your bike, android/ios compatible app, bluetooth pinpointing of locked bike's location, loud 100dB alarm, unpick-able, low profile mount, 3 month battery life (rechargeable via micro usb)
    Cons
    Single bolted shackle, non rechargeable (long battery life), not as versatile as a folding or chain lock
    5mm plates are more vulnerable to bolt cutters
    Can't be unlocked without charged mobile phone, more features & settings to get to grips with, manual unlocking through app is sometimes required
    Bottom Line
    The Oxford Alarm-D offers great security for your bike and Is the best bike lock with alarm. Its 120dB alarm is noticeably louder than the other two locks reviewed in this article and its simple features make it a joy to use.
    The ABUS 6000A is another good choice of alarmed bike lock. Whilst it doesn't offer the same level of security against bolt cutters as the Max Duo or Smart-X, it offers increased versatility and performed well during our tests. A practical, compact lock for everyday use.
    The 770A Smart-X is one for the tech lovers out there. It's also the most secure bike lock with alarm with its Sold Secure Gold rating. It's not bolt cutter proof, but if disturbed whilst in surveillance mode its 100dB alarm will blast. Sold at an eye watering price, but if you want the highest tech bike lock, it's gonna cost you!
    Shackle Thickness
    14mm Hardened Steel
    5mm Hardened Steel
    13mm Hardened Steel
    Weight
    -
    2.86lb (1.3kg)
    3.74lb (1.7kg)
    Lock Dimensions
    12.6" x 6.8" (32.0cm x 17.3cm)
    90cm Long (when unfolded)
    9" x 4.25" (23cm x 10.8cm)
    Security Ratings
    Best Alarmed Bike Lock
    Preview
    Oxford Unisex's D Duo Max Alarmed Shackle, Black/Blue, One Size
    Model
    Oxford Alarm-D Max Duo
    Pros
    Ear piercing 120dB alarm, Hardened steel shackle, great mounting bracket, comes with extension cable, cheapest bike lock with alarm, super easy to operate
    Cons
    Single bolted shackle, non rechargeable (long battery life), not as versatile as a folding or chain lock
    Bottom Line
    The Oxford Alarm-D offers great security for your bike and Is the best bike lock with alarm. Its 120dB alarm is noticeably louder than the other two locks reviewed in this article and its simple features make it a joy to use.
    Shackle Thickness
    14mm Hardened Steel
    Weight
    -
    Lock Dimensions
    12.6" x 6.8" (32.0cm x 17.3cm)
    Security Ratings
    Preview
    ABUS Unisex's Bordo Alarm 6000/90 Plus Black Padlock, 90 cm
    Model
    ABUS Bordo Alarm 6000A
    Pros
    Increased versatility thanks to flexible shackle, loud 100dB alarm, simple to operate, fantastic mounting bracket, folds down into a small package, capable of securing multiple bikes, hardened cut-proof rivets
    Cons
    5mm plates are more vulnerable to bolt cutters
    Bottom Line
    The ABUS 6000A is another good choice of alarmed bike lock. Whilst it doesn't offer the same level of security against bolt cutters as the Max Duo or Smart-X, it offers increased versatility and performed well during our tests. A practical, compact lock for everyday use.
    Shackle Thickness
    5mm Hardened Steel
    Weight
    2.86lb (1.3kg)
    Lock Dimensions
    90cm Long (when unfolded)
    Security Ratings
    Preview
    ABUS 770A SmartX Bicycle Lock with Bluetooth and Alarm (100 db) - iOS & Android - Security Level 15, Unisex - Adults, Black with USKF holder, HB300
    Model
    ABUS 770A Smart-X
    Pros
    High tech keyless operation, option to add multiple users so that friends can access your bike, android/ios compatible app, bluetooth pinpointing of locked bike's location, loud 100dB alarm, unpick-able, low profile mount, 3 month battery life (rechargeable via micro usb)
    Cons
    Can't be unlocked without charged mobile phone, more features & settings to get to grips with, manual unlocking through app is sometimes required
    Bottom Line
    The 770A Smart-X is one for the tech lovers out there. It's also the most secure bike lock with alarm with its Sold Secure Gold rating. It's not bolt cutter proof, but if disturbed whilst in surveillance mode its 100dB alarm will blast. Sold at an eye watering price, but if you want the highest tech bike lock, it's gonna cost you!
    Shackle Thickness
    13mm Hardened Steel
    Weight
    3.74lb (1.7kg)
    Lock Dimensions
    9" x 4.25" (23cm x 10.8cm)
    Security Ratings

    Last update on 2020-09-17 at 15:50 / Affiliate links / Images from Amazon Product Advertising API

    The Best Bike Locks with Alarms

    Unlike other websites, I get hands-on experience with the locks that I review before recommending them to my readers. This way you know exactly what you can expect from each lock and can be sure that your money is well spent, and your bicycle is well protected.

    The three locks shown in the table below are the best bike locks with alarms available today. All three of these alarmed locks offer different features, which you can read about in more detail below. This should help you find out, which works best for you and your bike.

    Oxford Alarm-D Max Duo – The Impressive D Lock with 120db Alarm Feature

    The Oxford Alarm-D Max Duo may look like any old bike D lock, but this D lock packs a deafening alarm that will send thieves running.

    Oxford have been producing top-quality locking solutions since 1973, and it’s fair to say they haven’t sat still since then!

    Oxford Alarm-D Max Duo

    The Oxford Alarm-D Max Duo offers very impressive security to its users. The D lock gained the Sold Secure Silver rating, which means it offers a compromise between security and price.

    This alarmed bike lock is substantially cheaper than the other two locks reviewed in this article. Which makes it much more accessible to cyclists on a tighter budget.

    Sold Secure Testing Alarm
    Sold Secure clearly state on their website that features such as alarms and accessories are not taken into account when testing locks for their security. (Credit - SoldSecure)

    When testing bike locks, Sold Secure don’t take alarms or accessories into account when determining their security rating. It’s fairly clear however, that the alarm feature this bike lock utilises, greatly increases its security.

    When I took the Oxford Alarm-D out of its packaging I was so eager to test the 120dB alarm feature, that I foolishly set it off inside. It’s safe to say, I won’t be doing that again. Its alarm is deafening. I couldn’t stand the alarm for more than two seconds and had to turn it off.

    The video below shows just how loud the alarm feature is, I advise you to turn your volume down before watching. 

    The Alarm-D Max Duo features a 14mm hardened steel shackle, which makes it bolt cutter resistant, but not quite bolt cutter proof. It’s worth noting that this lock is not double bolted, which leaves it more vulnerable to twist and hydraulic attacks.

    That being said, if a thief attempted to clamp a pair of bolt cutters around the Max Duo’s shackle it’s warning alarm would sound and if tampering continued, the deafening alarm would sound.

    The alarm of the Oxford Alarm-D range is weatherproof and can be muted if desired. The alarm feature is powered by a long-life CR2 battery, which is included with the lock when purchased. The replacement batteries can be picked up online or most hardware stores for around $5 (£4), but you won’t need to replace this frequently.

    This alarmed bike lock comes with a very basic, yet effective mounting bracket that allows users to attach the Alarm-D to almost any position on their bike’s frame. A convenient and safe way to transport this bike lock whilst you ride.

    Oxford Alarm-D Max Duo Mount
    The mount supplied with the Max Duo allows you to securely attach this D lock to your bike's fram whilst you ride.

    Three keys are included with the Alarm-D lock and you’ll also receive a key code so that spares/replacements can be cut if required.

    Activating the alarm module on the Alarm-D range is very straightforward. Fit the shackle around your bike and insert it into the lock’s body. Rotate the key anti-clockwise and remove it, the alarm module will then produce a short tone to indicate its activation.

    If the alarm is set off for any reason, it will continue to sound until tampering has stopped. You can cut the alarm short by inserting and turning the key. Or if you wish to completely deactivate the alarm, quickly fully rotate the key to the open position and back to the closed position.

    Oxford Alarm-D Max Duo Extension cable
    The extension cable supplied with the Alarm-D give you plenty of length to secure your bike's accessories.

    The Alarm-D is available in three sizes, the Alarm-D Mini 20.5cm x 15.5cm, the Alarm-D Midi 26cm x 17.3cm and the Alarm-D Max Duo 32cm x 17.3cm.  All of these sizes are Sold Secure Silver rated and feature the deafening 120db alarm.

    The Alarm-D Max Duo comes with a very useful extension cable that you can use to secure your wheels and other accessories with.

    This is definitely one of the best bike locks with an alarm. It will provide impressive security for your bike whilst you leave it secured, at a very reasonable price. The Alarm D is also conveniently available on Amazon, you can view it here.

    If you’d like to find out more about the Alarm D max Duo, have a read my in-depth review

    ABUS Bordo Alarm 6000A – The Sold Secure Silver Folding Bike Lock with 100dB Alarm

    German engineering is known to be some of the best in the world, and ABUS have backed this up with their innovative design and very secure range of bike locks.

    The ABUS Bordo Alarm 6000A is the only alarmed folding bike lock with a Sold Secure rating on the market.

    This impressive lock was featured in the best folding bike locks and provides great security for your bike thanks to it’s 5mm specially hardened steel plates and 100dB alarm.

    Abus Bordo Alarm 6000A Folding Bike Lock
    The ABUS Bordo Alarm offers greater usability than the Oxford Alarm-D, for a higher price.

    When unfolded, the Bordo Alarm 6000A is 35” (90cm) long which provides you with a large, adjustable locking area. When using a D lock, you’re limited with what you can secure your bike to because of the solid shackle they use.

    Folding bike locks allow you to secure your bike to almost any object, which makes them more convenient for everyday usage. The 6000A Alarmed bike lock weighs 2.86lb (1.3kg) when removed from its mount.

    ABUS rated the 6000A at 10/15 on their security scale, which is reflected in this alarmed bike lock’s Sold Secure rating. As previously stated, the Sold Secure Silver rating means that this lock offers a compromise between security and price.

    The Bordo Alarm 6000A is slightly more expensive than the Oxford Alarm-D Max Duo, but for the convenience that this folding bike lock offers, it could definitely be a worthy upgrade.

    Before After

    Folding bike locks have flexible shackles that can secure your bike to more objects than a D lock could. Here we have the Oxford Alarm-D vs ABUS Bordo Alarm.

    The 100dB alarm this lock features is loud and will scare the crap out of an unsuspecting thief. This alarm isn’t as loud as the Alarm-D’s, and when tested the difference was noticeable.

    The 100dB alarm is ear piercing if you’re close to it, so will definitely stop a thief in their tracks. However, due to the 20dB reduction of this alarm’s volume, it might not do as good a job at attracting the attention of passers-by as the Oxford Alarm-D does.

    That being said, this alarm feature is loud and will no doubt increase your bicycle’s security whilst locked.

    The mount that comes with the Bordo Alarm folding lock is very impressive and super easy to use. Normally, manufacturers focus all of their budget and time on the bike lock’s security, so it’s nice to see that ABUS have considered all aspects of this alarmed bike lock.

    The mount features two spring-loaded clips, which allows you to have access to the Bordo Alarm within a split second. Simply pop the clips open and remove the lock. The video below shows just how quick and convenient this is.

    The mount is designed to be attached to your bike’s water bottle mount, but the lock is supplied with Velcro straps that allow you to attach the mount to anywhere on your bike’s frame.

    ABUS Bordo Alarm 6000A Folding Lock Keys

    The ABUS Bordo Alarm 6000A is supplied with two keys and a key card which allows spares/replacements to be easily ordered. This lock can also be ordered to be keyed alike to other ABUS locks, which is very convenient if you already make use of ABUS security products.

    A versatile, secure alarmed bike lock that offers a larger range of locking options thanks to its folding shackle. Easily one of the best bike locks with an alarm. In my opinion, this is a more practical choice than the Oxford Alarm-D, but is considerably more expensive. 

    ABUS 770A SmartX – A Super Smart Bike Lock with Alarm and Genius Security Features

    Basics of the 770A SmartX

    As I mentioned before, ABUS really lead the way with their innovative engineering and the 770A SmartX D lock backs up this statement with its high tech features and Sold Secure Gold rating.

    This is the only Sold Secure Gold bike lock with alarm that I know of (designed for bicycles). ABUS gave the 770A SmartX 15/15 on their in house security scale, which puts it up there with their best bike locks in their ‘Maximum Security Category’.

    This also means that the 770A SmartX is the most secure alarmed bike lock featured in this article. Its Sold Secure Gold rating makes the 770A suitable for use in high-risk areas and much more suitable for securing expensive bikes.

    ABUS Klickfix Mount 770A SmartX
    The ABUS KLICKfix mount system is the lowest profile mount I've seen of any D lock. Impressive!

    The SmartX weighs 3.74lb (1.7kg) and is supplied with a KLICKfix mounting system. A low profile mount that is designed to fit onto all bikes. 3.7lb is heavier than most regular D locks, but this extra weight is understandable when you consider the 13mm hardened steel shackle and all of the technology that has been squeezed into the SmartX.

    This lock measures 9.05” x 4.25” (23cm x 10.8cm), so provides plenty of locking space for your bike’s wheels and frame to be secured at the same time.  

    The 770A SmartX is controlled using the ABUS SmartX Application, which can be downloaded for free from on the Google Play Store for Android users or on the App Store for iPhone/ios users.

    ABUS SmartX App
    I found the ABUS SmartX App very straightforward and was easily able to manage my SmartX lock

    Further Details & Review of the ABUS 770A SmartX

    This is the first keyless bike lock that I’ve had hands-on experience with, and I was quite sceptical about this feature at first. However, after putting this lock through some thorough testing, I can confirm there’s nothing you need to worry about.

    Unlike the other alarmed bike locks featured in this article, the 770A SmartX is rechargeable. I had originally thought the SmartX would need to be regularly charged to keep it functioning, but it was only after my first three months of using this lock that I had to re-charge it.

    ABUS also say that the lock’s battery lasts up to 3 months on one charge. The battery life depends on the temperature of the country you live in, the colder, the shorter the life of the battery.

    I personally suggest charging this lock every 1-2 months to be safe.

    ABUS 770A SmartX Charging
    The 770A SmartX is charged with a USB to USB-C cable (supplied in box) and can be chraged from a regular USB plug, or from other devices using an adapter.

    Once you’ve downloaded the SmartX app to your phone, you’ll be prompted to enter your name and scan the QR key card which can be found inside the box. Once scanned, you only need to slide the button on the bottom of your 770A SmartX and you’ll be good to go!

    The SmartX’s locking mechanism operates using your mobile phones Bluetooth feature. When you’re nearby and your phones Bluetooth is active the lock will enter the open position so that you can easily pull it open.

    You might be slightly scared of this feature as you could walk by and unknowingly unlock your bike. I thought the same, but the SmartX app actually allows you to alter the distance of your mobile phone required to open the lock.

    I slid the unlocking distance to ‘very close’ and was only able to unlock my 770A when my phone was literally touching the D lock. Very, very impressive technology.

    ABUS SmartX Unlocking Distance Adjustment
    For those who are sceptical of the keyless locking system (just as I was), the unlocking range can be adjusted so that your phone has to be within 2-3cm of the system before the SmartX will open.

    Once my phone was much further away than 5cm it would give me an alert within the app that I was not close enough to use the keyless setting. Instead, the app would give me the option the ‘manually open it’ with an on-screen button.

    This may all sound too good to be true, and it almost is. However, there is a small downside to this incredible technology. Battery on two devices (mobile phone & 770A SmartX) is required in order for this lock to function.

    You’ll need to make sure that your phone is charged in order to unlock the 770A, and you’ll also have to charge the SmartX every couple of months.

    700A SmartX Box
    ABUS gave the 770A 15/15 on their in house security scale and recommend it for E-Bikes.

    This lock is considerably more expensive than the others in this article. If you do want an alarmed, Sold Secure Gold bike lock that will keep your bike secure in high-risk areas, this is the only one currently on offer.

    Apart from having to charge the lock every couple of months, I couldn’t find any other issues to pick with this very impressive D lock. The most secure and high tech alarmed bike lock available, and a fantastic choice if you have the budget to cover it.

    Choosing the Right Bike Lock with Alarm for You

    Many manufacturers have their own in house security ratings, which does cause a lot of confusion with cyclists.

    Keep an eye out for Sold Secure security ratings when purchasing a bike lock. Sold Secure is a non-profit organisation set up to test and grade the quality of different security products.

    There are three different ratings that a bicycle lock can obtain, Sold Secure Bronze, Silver and Gold.

    Sold Secure Ratings 2020
    These are the most up to date Sold Secure rating badges, older badges may look slightly different, but all will display the Sold Secure logo.

    You’ll notice on BikeLockWiki that I don’t recommend anything below a silver rating. This is simply because locks with a Sold Secure Bronze rating ‘offer protection from the opportunist thief’. This level of protection simply isn’t good enough for any bike.

    Sold Secure Silver bike locks offer a compromise between security and cost, which makes them suitable for less frequent use, or for use in lower risk areas such as small towns and villages. Or if you were popping down to the shops for half an hour, you’d probably be fine to leave your bike locked for an hour.

    This all obviously depends on how valuable your bike is. If the reward is worth the risk for a thief it’s more likely you’ll end up with someone trying to steal your ride. So if your bike catches glances from passers by, you’ll want to use something more secure. A Sold Secure Gold lock.

    Sold Secure Gold is the the highest level of security for bicycles. If you value your bike, or invested a reasonable sum of money in it, you’ll want to use a Gold rated lock.

    The flow chart below will help you decide which level of security works best for you.

    A diagram explaining which sold secure rating cyclists require.
    (Click to enlarge)

    The Best Bike Locks with Alarms – Summary

    So there you have it, the three best cycle locks with alarms.

    Hopefully, you’ll now understand the benefits that an alarmed bike lock provides. I enjoyed producing this article as I’ve always been interested in companies working on innovative projects and pushing the boundaries of what we’re used to.

    The three locks I’ve covered in this article all offer different features and retail at very different prices. If you want the best and most secure bike lock with alarm, then it will cost you.

    Thief scared by bike lock with alarm
    Most thieves will be startled and scared off by any of these bike locks with loud alarms.

    The Oxford Alarm-D is a Sold Secure Silver alarmed bike lock, that provides a good level of security for your bike. It’s super loud 120dB alarm will easily grab the attention of passers-by, or scare off most unsuspecting thieves. What’s more, all of this comes at a very reasonable price. Making this the best bike lock with alarm.

    Personally, if I had to choose one of these bike locks with alarms, I’d go for the ABUS 770A SmartX. I chose this lock because my bike is relatively expensive, and I sometimes leave it secured for longer periods of time. 

    The ABUS 770A SmartX is a top-quality bike lock that pulls all the stops. The only downside is its price. If you don’t have the budget to afford the 770A, check out my articles below for some of the best, affordable Sold Secure Gold bike locks

    Remember, lock it, or lose it.

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    Hello! My name’s James, I’m an avid cyclist and the lead editor of BikeLockWiki.

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    I do this in the hope that people don’t have to simply become a victim of bike theft to realise and understand the importance of bicycle security. Read More…

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