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Best Bike Lock for Brompton Bike [Top 5 Picks in 2021]

If you own a Brompton bike, then you know the shudders that go down your spine whenever you imagine that you could lose it. From the cost to the hassle of buying the bike, and finally the pleasure you feel after finally getting it, theft is the last thing you want on your mind.

For this reason, you will want to invest in not just any other lock, but the best bike lock for Brompton possible. This is where we come in, with a narrowed list of a few locks that are suitable for your Brompton, and with the assurance of utmost security. Moreover, we will delve into ultimate tips on locking the bike outside that you should consider, in addition to a buying guide.

5 Best Bike Locks for Brompton Bike

Without further ado, let’s get the show on the road on the top 5 bike locks that you should consider for a Brompton bike.

1. Terra Hiker Bike Chain Lock: Best for Quick Stops

If you want a bike lock that favors quick stops during your road trip on your Brompton, then this Terra Hiker is a great way to secure your bike. This is due to the ease of installation, which supersedes other bike locks. But that’s not all;

For maximum security, the lock offers a 5-digit combination code, which makes it harder to crack. Other than eliminating the risk of theft, the code method further saves you from having to carry keys around.

On top of that, the inner chain, which is manganese steel, is not just wear resistant, but also rustproof and difficult to cut through. Wrapped in scratch-proof fabric, the chain is safe from external wear, and your bike also protected from chain scratches.

Moreover, the lock cylinder is zinc alloy construction, which will not melt at low temperatures. Hence, your summer tour will still be highly effective.

With 22 links and a circumference of 94 cm, the chain is long enough to handle accommodate most posts.

  • Easy to install
  • Secure coding lock
  • Strong construction material
  • The chain thickness is a concern to some customers

2. SANWO Security Bike Lock: On Budget Lock

Even when you don’t have much to spend on a lock, you still want the best at a pocket-friendly rate, isn’t that so? Therefore, we brought this competitive lock from SANWO, whose performance beats the price by far.

Fundamentally, the lock uses a 4-digit combination code, hence convenient as no keys are involved. Other than that, it will be difficult for a thief to guess your secret combination.

In addition, the chain construction is a solid plastic shell, blended in flexible steel cables for awesome performance.

For convenience in mobility, the chain is only 2 feet in length, just enough for normal pole sizes.

Finally, you can use the lock with a tool box, skateboard and other sporting equipment when not using it on your bike, hence versatility in use.

  • Compact and easy to carry
  • Inexpensive
  • Secure coding lock
  • Versatile use
  • Not suitable for very large poles

3. OTTOLOCK Sidekick Compact U-Lock: Trust the U-Locks?

U-locks are some of the hardest bike locks to break, so I don’t blame you if that’s the only option that you accept. But even so, you will have to ensure that the quality of the lock is top notch, right? Take a glimpse at this OTTOLOCK Sidekick then.

Taking into consideration the fact that it is a u-lock, this lock is comparatively lightweight. It weighs only 1.65lbs, in addition to being compact, hence easy and convenient to carry around.

Then, the body of the lock is silicone coated, so that it does not leave marks and scratches on your bike frame. Regardless, the overall construction is really tough and hard to break. Technically, it is a double-shackle hardened steel, which is 12mm. It is then reinforced with anti-rotation deadbolt, strengthening it even more.

The locking mechanism of the lock is keyed, and the lock package comes with 2 keys to start with. If you lose your keys for the first time, you will receive a free package of another pair.

  • Lightweight and convenient to carry around
  • Strong and durable construction that is hard to cut
  • Free pair of keys in case of a first loss.
  • Risk of losing the keys

4. Titanker Bike Lock: Higher Pole Bracket

If your bike pole is not standard, then you must be familiar with the hassle of looking for an ideal lock. But no more, because this bike lock from Titanker is highly adjustable to suit any bike pole. This is due to a 2-piece inner rubber pad, which allows for flexibility.

For the best security measures, the bike lock uses 4-digit resettable coiling lock. You can reset it whenever you feel insecure with a current code, making it more difficult for a thief to track and steal your bike. And don’t forget that a coded lock is more convenient, in that you don’t need to keep track of the keys.

To enhance the performance, the lock features flexible steel cables, which resist cutting to a large extent. Coupled with a PVC coating, the lock becomes even more durable, not to mention that it never leaves scratch marks on your bike pole.

Available in 6 different colors, you can add your favorite color to your bike. Moreover, you can use the lock with different equipment options, other than the bike.

  • Accommodates different bike pole circumferences
  • Secure coding lock
  • The lock is easy to reset
  • Strong and quality material combination
  • Difficulty resetting the password if you forget

5. FOLDYLOCK Compact Bike Lock: Drill-Resistant

Though uncommon, drilling is one of the surest ways that bike thieves have come up with. Most locks may not stand this, but not this FOLDYLOCK bike lock. Let’s have a look at more of what the lock has to offer:

First, this lock is complex in design, which makes it difficult to figure out. Second, the links are robust steel, which is stronger and more secure, even in a high traffic parking. Third, the rivets that are used in the lock use the VSR technology, which withstands sawing and cutting. Forth, the cylinder components are drill-resistant, finally blocking any way that a thief could think of.

Despite the sophisticated folding components of the lock, it is quite easy to install and put to use. Also, the design makes it easy to carry around, with a small weight of only 2.2 pounds.

The lock uses keys, and in case of loss, the package has a duplication card that you can use to get another set.

  • Withstands all methods that thieves could use on your lock
  • Easy to use
  • Lightweight
  • Uses keys, which could be lost

Factors to Consider When Buying the Best Bike Lock for Brompton

Type of Lock

What type of bike lock do you prefer most? This is among the top questions that you should answer before getting a bike lock for your Brompton.

Also, consider that your Brompton bike is foldable, and whether you want to lock it folded. If so, get a lock that will allow for larger space of locking. If not, any quality bike lock that is compatible with the bike will be great.

Also, if you are not good with keeping track of keys and small stuff, then don’t invest in a key lock. On the contrary, if keeping a memory of codes is the last thing that you want to add to your already long list, then a coded lock will not do.

Construction Material

The construction material of the cable or chain of the lock is really important to a secure lock. Check if the material is hard to cut, drill into and even saw. The harder locks will shun the thieves away from your bike.


A lightweight bike lock does not mean that it is easy to break into. However, I’m not saying that all lightweight locks should be trusted. It is upon you to determine the quality of the construction. If credible, then you can now have a look at the weight of the lock.

A lighter lock will not interfere with the weight of your bike, making it more convenient to carry around.

Color Options

If you are a fan of colors, then don’t compromise what you love. Good for you, you will get awesome performance from locks whose color options are innumerable.

So, go for the color you would love to add to your bike, while taking care of the locking needs that you are looking for.

Design of the Lock

There are several lock designs that you will come across, ranging from completely rigid to quite flexible ones. The shapes also differ, depending on the specific lock.

Choose the lock design that will not interfere with your locking method, especially if you want to lock the bike while folded.

Tips on Locking Your Brompton Bike Outside

Since the Brompton bike is foldable, it is debatable whether you even have to leave the bike outside. Nevertheless, there are areas where you cannot enter with the bike, either due to convenience or security restrictions. So, what should you know about locking your Brommie in such an instance? Here are a few tips to consider with your locking process:

  • Choose an Area Under CCTV: An area that has CCTV keeps thugs away, because they do not want to be traced regardless of the daring actions.
  • Use a Quality Bike Lock: Invest in a quality lock, regardless of how expensive it may be. It will be way cheaper if you think that the cost could cost you the expensive electric bike that you treasure.
  • Consider Investing in More than One Lock: Though one lock is enough to cover a larger part of the bike when folded, an extra lock will not harm to extend the security.
  • Leave the Bike where it is Conspicuous to the Premise Guards: If the bike is in an area where the guards can easily see it, very rarely will a thief even try to come near the bike.
  • Lock it in an Area with More Bikes: If you lock your precious bike with other bikes, it will be rare that the thief will choose your bike. And even if they did, there is a high chance that one of the bike owners could see, hence scare the thief away.
  • Remove Vulnerable Accessories: Remove the lights, seat cover and other expensive accessories on your bike that are removable. This way, your bike will not only appear dull, but you will also be safe from losing bike accessories.

Frequently Asked Questions (FAQs)

Can you lock up a Brompton?

Yes, you can. Actually, you can lock a Brompton bike folded or unfolded, depending on how long you will be away from the bike. so, it is essential that you get a lock for the bike.

Are bike locks unbreakable?

No, they are not. For this reason, you will need to be more careful than just buying a lock. Consider the tips above to tighten your locked bike’s security.

How do you lock a folding bike?

If you want to lock it when folded, then you will secure the front and rear wheel, in addition to the bike frame, attaching these three major points to the lock.

How would thieves know that your bike is registered?

If you register your bike against theft, then use a sticker on your bike indicating that the bike is registered. This way, most thieves will not dare come near such a bike.

Final Verdict

Best bike lock for Brompton bike? Brompton bikes require special locks, given that you sometimes want to lock it foldable. On the other hand, you may just be looking for a lock for quick on-the-way stops. Either way, you have the options of locks that you will find exciting and helpful to explore.

Make the best out of the buying guide, and make a choice that will keep you and your bike comfortable and confident, even when you have to leave the bike outdoors.