Can You Cut a Bike Lock with Bolt Cutters?

You are a bike owner and you want to know if bolt cutters can be used to break your lock. Is it possible for someone else with bolt cutters, even without any tools on hand, to take away from what is rightfully yours?

It’s not likely that thieves will use a pair of bolt-cutters in order to steal bikes as they could easily make off with them during the day. However, if this becomes an issue then there are other ways to keep your bike safe.

Can You Cut a Bike Lock with Bolt Cutters?

Yes, you can cut a bike lock with bolt cutters. Bolt cutters are a type of cutting tool that can be used to cut through most types of cable locks and weaker chain locks or U-locks.

When using bolt cutters to try to cut through a bike lock, it is important to keep in mind that they will easily be able to cut through cable locks. However, if you are using a cable extension with your bolt cutter, this will help to deter chances.

Hardened steel is resistant to bolt cutters, so if you’re looking for a bike lock that will give you a bit of a fight, get one made with hardened steel.

Additionally, go for the thickest possible option; this will make it more difficult for someone to cut through your lock with bolt cutters. If your bike lock fails, you may need the help of a locksmith to free it.

If you have locked your bike up at a public bike rack, it is always a good idea to carry proof of purchase with you in case you need to show it to authorities.

Why the Need to Cut a Bike Lock Cable

There are a few reasons why you might need to cut a bike lock cable. One reason is if the lock has been tampered with in some way, usually by being sawed through.

Another reason is if the lock has failed to open using the key or combination of numbers or letters. In either case, it may be necessary to cut the bike lock cable in order to free the bicycle.

The cyclist has lost their bike lock key and needs to cut the cable to free their bicycle. Bike locks are generally made up of two parts: a U-shaped shackle that goes around the frame and wheel of the bicycle, and a cable that passes through the shackle.

The cyclist can use bolt cutters to cut the cable, provided they have enough space to do so without damaging the frame or wheel of the bicycle.

When Is It Right To Cut Your Bicycle Lock?

When The Bolt is Broke

If the bolt is broken, it must be cut open to fix the issue. Unfavorable weather conditions can cluster the elements inside the lock which can lead to a broken bolt. If your bike lock is too old, it might refuse to open due to unfavorable weather conditions.

When Your Bike Lock has Tampered

If kids try to enter sticks into the bike’s lock or thieves try to unlock a bike but their efforts fail, that is when the lock is said to be tampered with. A tampered lock can’t open freely, and that is why you need to know ways to cut or unlock your bike.

There are two ways to do this, the first way is to use a bolt cutter and the second way is to use a hacksaw.

If you have a bolt cutter, you can easily cut through the lock. However, if you don’t have a bolt cutter, you can still use a hacksaw. It will take some time, but it is possible to cut through the lock with a hacksaw.

You’ve Lost your bicycle Keys

If you lose your bicycle keys, you have a few options. If you don’t have a backup lock, you can cut your bike lock to get back on your bike.

However, if you have a backup lock, you can’t cut your bike lock to get back on your bike. In this case, you’ll need to find a locksmith or bike shop that can help you get a new key made.

When there is Bolt Lock Failure

There are two main reasons for cutting your bicycle lock. The first is when the lock visually looks in perfect condition but it fails to open using keys or enter the secret combination of numbers or letters.

The second reason is when the bolt lock system inside the lock has malfunctioned.

What Are the Best Methods for Cutting Bike Locks?

Bolt Cutters

Bolt cutters are the easiest way to cut through a padlock. If your lock diameter is more than 16 mm, you will need to go for a larger size manual bolt cutter. There are other ways you can cut through a padlock, but bolt cutters are the most common and most effective method.


If you’re looking for the best way to cut bike locks, hammers are a great option. Locks that don’t have strong security features are easily smashed with a hammer. However, you should try to buy a high-quality lock that won’t break by the hit of a hammer.

Scaffold Poles and Crowbars

Scaffold Poles and Crowbars are effective tools for cutting bike locks. A smaller u-lock and good locking technique can make this much more difficult for the thief.

Cable Cutters

Cable cutters are a great choice for cutting bike locks. They are easy to carry around and can easily cut through most cable locks. A hacksaw is also a good choice for cutting bike locks.


Hacksaws are small, easy-to-carry tools that can be used to cut bike locks. They can also be used to cut through other materials, such as wood and metal.

Hacksaws can be used to cut U-locks made from soft and thin metals. This makes them an incredible tool for cutting thin bike locks.

Angle Grinders

Angle grinders are a great choice for cutting bike locks because they can cut through any thick lock within the shortest time possible. Angle grinders produce more noise and a lot of sparks, so they draw more attention.

However, angle grinders are not as strong as bolt cutters or skunklocks, but they are still effective at cutting bike locks.

Hydraulic Bottle Jacks

Hydraulic Bottle Jacks are an efficient tool for bike lock cutting. The intense pressure generated by the jack will pop out and break the lock easily.

Hydraulic Bottle Jacks are used by some of the more serious bike thieves.

A good locking technique should always try to fill up as much of the space inside your U-lock. This makes it more difficult for thieves to use hydraulic bottle jacks or other tools to break your lock.

How Can You Cut a Bicycle Lock Using Bolt cutters, Angle Grinders and Hacksaws?

Using a Bolt Cutter to Cut the Lock of bikes

A bolt cutter is a type of cutting tool that is used to cut through metal. Bolt cutters come in a variety of sizes, but the most common size is the 24-inch bolt cutter. The 24-inch bolt cutter is the best size for cutting through the average bike lock.

To cut the lock of a bike with a bolt cutter, you need to use a lever-style cutter. Lever style cutters have two handles that are connected by a pivot point.

The pivot point is located at the center of the cutting jaws. To use a lever-style cutter, you need to place the cutting jaws on either side of the bike lock.

Then, you need to apply pressure to the handles to close the cutting jaws. The cutting jaws will cut through the metal of the bike lock.

Using an Angle Grinder

An angle grinder is a handheld power tool that can be used to cut, grind, and polish metal. It has a rotating disc that is covered in abrasive material. When the disc spins, it cuts through the metal.

You can use an angle grinder to cut through a bicycle lock. You will need a metal cutoff wheel with your angle grinder as well, but these are not terribly expensive.

Before you start cutting away, though, you will need to wear the proper safety gear. Metal fragments can go flying once you start cutting, so you will need to wear safety googles and work gloves.

You should expect to make sparks while cutting. Hold the blade so that it is perpendicular to the lock. Then, you can begin slowly cutting.

Cutting b bike lock with a Hacksaw

In order to cut a bicycle lock with a hacksaw, you will need to take the following precautions:

Wear goggles and work gloves to protect your eyes and hands. Heat up the shackle before you start cutting. This will weaken the steel and make it easier to cut through.

Once you have taken these precautions, you can start cutting through the lock with your hacksaw.

How to Unlock a Bike Locked with a U-Lock?

1. Open The U-Lock with A Ballpoint Pen

There are many ways to open a U-Lock without the key and one of them is using a ballpoint pen. This can be done by removing the pen’s tip or using a tube with a similar diameter. It’s important to note that not all pens will work and you might have to try a few times before finding the right one.

2. Open A Low-Quality Lock Using Shims

Shims are thin pieces of metal that you can use to unlock a bike lock by sliding the pointed end of the shim into the crevasse between the lock body and the shackle.

You can open a low-quality lock using shims. You can also use a Dremel as well to open a low-quality lock.

Be very careful when cutting with a Dremel, as there is a high chance of them breaking. Use a reinforcement wheel if possible.

3. Call a Locksmith

If all the methods used to unlock the bike lock are unsuccessful, it is essential to reach out to a locksmith. Locksmiths can easily open cheap bike locks without harming the structure of the lock; this makes the locks usable again.

For more expensive locks that provide high security, a locksmith may also be able to service the lock so that you can use it again.

How to Secure your Bicycles from thieves

There are a few ways to secure your bicycles from thieves. One way is to lock it to a ladder or boat in your garage with an eye bolt. You can then run a chain or cable over the eye bolt and around the bike frame for extra security.

In addition, bike riders should use good locking techniques to deter thieves. This means that they should try to fill up as much space inside the lock as possible. U-locks are one of the most common locks for bikes because they offer safety from thieves.

Bicycles are often stolen because people do not take the time to properly secure them. Many thieves will simply use bolt cutters to snip through a lock if there is space between the bike and the lock.

To make it more difficult for thieves, make sure that the lock is tight against the bike frame and that there is no room for someone to insert bolt cutters.

What are the Best Uncuttable & Unbreakable Bike Locks for Bicycle Security Against Thieves

Altor SAF Lock

The Altor SAF Lock is a bike lock that is uncuttable with bolt cutters and unbreakable with an angle grinder. The only setback for the SAF Lock is that it’s not suitable for use on the go. The SAF Lock is made of soft aluminium, making it more resistant to cutting and grinding than other bike locks.


SkunkLock is a portable uncuttable lock that can fight back against thieves. The Skunklock is designed to be legal in most states and countries. The Skunklock is capable of locking both of your bike’s wheels and its frame! The Skunklock can’t be cut with bolt cutters.

Pragmasis Protector Chain

The Pragmasis Protector Chain is the best bike chain on the market. The 16mm Protector Chain is guaranteed to be “uncroppable” and “guaranteed impossible to bolt-crop by hand”. The Protector Chain can be ordered with a regular or noose end link.

The Titan chain’s links weigh 1.8lb (0.8kg) each, which is the same weight as a small D lock. The largest hand-powered bolt cutters out there (Irwin Record 924s) won’t physically open wide to encompass the 16mm chain, let alone the 22mm Titan links.


In conclusion, you should not use this guide to cut bike locks for any illegal purposes. Choose a method that works best for you and if none of them works due to no tools available at the moment, reach out to a professional locksmith.

Follow the laws in regards to the methods listed above, and good luck opening your bike lock.

Anna Stones