10 Best Bike Locks in 2021

Stuart Wellbert
Written by
Last update:

Should you use a cable lock or a chain when locking your bicycle?

When it comes to locking your bike using a chain or a cable, the security of a bike chain seems obvious.

But does the heavy duty chain offer any advantages when compared to the lightweight cable lock?

To be honest, I’m slightly against buying a chain because they’re so damn heavy!

But I definitely don’t think you should bypass the chain just because you’re trying to find the cheapest bike locks to buy.

So in an effort to help you make an informed decision when choosing between chains and cables, I’ve put together this bike lock buying guide to ensure you choose the best bike lock for your needs and to make sure you get the best possible value for your money.

The guide below compares all the leading chains vs cable locks available on the market today. I’ve done plenty of research to ensure the comparison is as accurate as possible.

NameCategoryProduct
Kryptonite Keeper 785 Integrated Bicycle Lock Chain Bike LockBest OverallKryptonite Keeper 785 Integrated Bicycle Lock Chain Bike Lock
Master Lock 8143D Combination Bike LockBudget PickMaster Lock 8143D Combination Bike Lock
Kryptonite New York LS Heavy Duty Bicycle U Lock Bike LockUpgrade PickKryptonite New York LS Heavy Duty Bicycle U Lock Bike Lock

1. Kryptonite Keeper 785 Integrated Bicycle Lock Chain Bike Lock

Our rating: 9 / 10

Kryptonite Keeper 785 Integrated Bicycle Lock Chain Bike Lock

Check Price on Amazon

I am a huge fan of this bike lock. It’s one of the best Kryptonite bike locks on the market and offers you the perfect combination of cable and chain.

This combination lock is a great deterrent for thieves who will see the cable and know that it’s not easily removable. They’ll then realize the bike is secured to something solid and won’t be of much interest to them.

You can also remove the connector, which makes it easier to store it in your car or on your bicycle if you’re locking both up.

2. SIGTUNA Bike locks

Our rating: 9 / 10

SIGTUNA Bike locks

Check Price on Amazon

  • 180°Quick Release Folding Lock for Parking Bike, Motorcycle, Scooter, Bicycle, Wheelchairs and Other Valuables.

Our second entry on this list comes from SIGTUNA. It features a solid shackle that can withstand the most substantial of attacks. The dual-sided lock comes with a keyless lock which is what you want if you’re going to be locking up your bike for long periods of time.

The interior feels really smooth which means that your bike is unlikely to get scratched.

3. Master Lock 8143D Combination Bike Lock

Our rating: 9 / 10

Master Lock 8143D Combination Bike Lock

Check Price on Amazon

Pros:

  • Comes with various nifty features
  • Design to prevent tampering
  • Very good value for money
  • Bike lock is long enough to use the first time around
  • Mounts to the frame to prevent someone from stealing the entire bike
  • Makes locking up your bike very easy
  • Has an attractive design
  • Bike lock can rotate 360 degrees
  • Bike lock is comfortable to hold
  • Includes a locking barrel with dual relocking security

Cons:

  • Bike lock has a rust-attractive appearance to it
  • Bike lock is difficult to install and read
  • Bike lock is sometimes hard to swipe if you have hands on the handle of your bike

The Master Lock 8143D Combination Bike Lock, 4 ft long, Black is a product that’s best built for those who need to keep their bikes safe and secure.

4. Kryptonite New York LS Heavy Duty Bicycle U Lock Bike Lock

Our rating: 9 / 10

Kryptonite New York LS Heavy Duty Bicycle U Lock Bike Lock

Check Price on Amazon

5. Kryptonite Kryptolok 12.7mm U-Lock

Our rating: 9 / 10

Kryptonite Kryptolok 12.7mm U-Lock

Check Price on Amazon

Pros:

  • Keyed different for security
  • Durable shackle
  • Includes a 4 foot Kryptonite chain
  • Locking radius of 10 inches
  • Includes a 4 foot Kryptonite chain
  • Includes a 2-foot KryptoFlex cable
  • FlexFrame-U mounting bracket included

Kryptonite is the brand that is known for its top-of-the-line security features. Its Kryptolok 12.7mm U-Lock with FlexFrame is no different.

This lock features a high-security 12.7mm hardened steel shackle which is designed to resist cutting and prying. It’s a bit on the heavy side, but it does offer impressive security for anyone worried about their bike being stolen.

This U-lock comes with a 4-foot cable (KryptoFlex) that you can use to secure your wheels to an immovable object. For extra security, you can also use Kryptonite’s 4-foot chain which attaches to the crossbar.

6. Kryptonite New York Cinch Ring Security Chain

Our rating: 8 / 10

Kryptonite New York Cinch Ring Security Chain

Check Price on Amazon

Pros:

  • Solid steel lock
  • Includes an anti-rattle device
  • Locking up your bike has never been easier
  • Color: Black
  • A favorite among cyclists
  • Long with a small footprint
  • Great for smaller bikes
  • Great for storing your bike at your house

Cons:

  • The security of this product is only as good as the lock that secures it
  • Not good for the everyday or infrequent cyclist

Let’s face it…it’s crazy the amount of money you’ll spend on your bike. Wouldn’t it be devastating if someone decided to steal it?

While you can’t always be around to keep it in check, you can make it a difficult tow for your bike thief with a chain lock like this Kryptonite one.

The 10mm 12-inch chain is composed of flexible steel links that will keep your bike protected. And the 14mm shackle resists bolt cutters. The stick padlock is great for casual and frequent cyclists who want to stay on top of their bike security.

7. Amazer Heavy Duty Combination Bike U Lock

Our rating: 8 / 10

Amazer Heavy Duty Combination Bike U Lock

Check Price on Amazon

Pros:

  • Supports up to 11mm thick tubes
  • Great for securing multiple cyclists’ bikes
  • Very tough construction
  • Weatherproof
  • Highly protected with a cylinder lock design
  • Conveniently sized for its key design
  • Anti-rust finish
  • Great for locking your bikes at home, work, and school
  • Easy to use
  • Waterproof

Cons:

  • Not very flexible when used on rough terrain
  • Sometimes it requires multiple attempts to unlock
  • May not cut through heavier cables

You can’t go wrong with a trusted brand like Amazer. This heavy duty bike lock is very well made and has a 5-star rating on Amazon. With a combination of a U-lock and cable, cycle thieves will not cut through this lock.

The Amazer bike lock combines the toughness of the U-lock with the flexibility of the cable, making your bike very difficult to steal. Along with this heavy-duty lock, you’ll receive two types of keys. If you’re going to ride your bike around town or leave it outdoors, this lock is tough enough to protect your bicycle.

8. Bike U Lock

Our rating: 8 / 10

Bike U Lock

Check Price on Amazon

Pros:

  • Bike Locks that are incredibly easy to use
  • Durable u-lock and cable
  • Great for securing your bike in public
  • Rust resistant material
  • Cable locks to keep your bike safe from thieves
  • Can be installed into the handlebars
  • Installation is quick and easy

Cons:

  • Lock is easy to maneuver
  • No quick release feature
  • U-lock can be folded for ease of storage
  • Great combo lock to have.
  • Attractive design and very easy to use

This combo U Lock with safety cable is one of our picks because it offers several benefits to the cyclists. With the U-Lock, you can lock one bike securely, while the other cable will go around the frame and wheel of your bike to make it safe.

This lock has a 14mm shackle, which is the best accessory to keep your bike safe. They come with their mounting bracket so that you can quickly install them on your bike. This is a lock that you may find extremely useful.

This is a 14mm lock that is also great for your home security, plus it comes with a flat mounting bracket that you can easily slide on. The cable has a length of 4 feet so that you can wrap your bicycle frame and wheel.

9. OTTOLOCK Steel & Kevlar Combination Bike Lock

Our rating: 7 / 10

OTTOLOCK Steel & Kevlar Combination Bike Lock

Check Price on Amazon

Pros:

  • Includes a mounting bracket, cable and disc lock
  • Convenient to carry and easy to set up
  • Easy to use
  • Appealing design and maintains aesthetic appeal

This is a really cool, innovative bike lock that stands out for a variety of reasons. The lock is incredibly compact and lightweight, which means you can easily carry it around.

The lock can be secured to a range of objects and has a sturdy design that makes it tough for thieves to break. It has an outstanding combination of steel and Kevlar, which is highly resistant to force and won’t crack if you need to pull a lever down, for example.

The keychain makes the lock convenient to carry around. It also produces an appealing design, as the keychain is made from carbon fiber.

10. SIGTUNA Folding Bike Lock

Our rating: 5 / 10

SIGTUNA Folding Bike Lock

Check Price on Amazon

For Your Car, Office or Bicycle Shop.

Frequently Asked Questions (FAQ)

What is the strongest bike lock?

Residential Grade U-locks and Kryptonite Evolution Series weigh in at about 5 pounds and are unpickable, but these anvil-shaped locks will tank your bike's maneuverability and functionality.

Locked-up bikes are less vulnerable to thieves who are looking for an easy target. An unsecured bike is an easy target.

The locks with the longest warranties are never the strongest, but they are nice to have when the lock fails or for when you need to replace it.

As the technology of bike locks continue to improve, we are seeing a shift away from u-locks to competing forms of security such as chains, cables, and folding locks.

These lock options allow users to avoid bike theft by providing more versatility, load capacity, weight capacity, and portability.

Is there a bike lock that Cannot be cut?

Yes, there are several locks that cannot be cut. If you plan to use a padlock for bicycle security, consider those that use a hardened steel shackle that is incredibly difficult to cut, if not impossible to cut. These locks can be costly, but if you have a highly prized bike or want to make an impression of protection, this is an excellent target.

A hardened steel shackle is a sign that the manufacturer is expecting bike locks to be cut. It's simply too hard to reinforce the lock, even if it's only on the shackle and not the lock body.

The alternative is to use a disc lock. These locks are increasingly popular because they can be used on both the chain and the frame, after the quick release mechanism. The wheels will need to be taken off, but even a D-lock can be used if the bicycle is stored within a rack.

Are cable locks any good?

Yes, cable locks are an excellent choice for urban cyclists, commuters, and local cyclists who want to protect their bike from opportunistic thieves.

Cable locks are lightweight, portable, and convenient to carry. They can be inexpensive and also very effective. I usually recommend these for people who don't expect to need to use their lock frequently. They are a less convenient option for those who expect to have their bike stolen regularly.

WIth that said, if you do not have a cable lock, then you should invest in one immediately.

Cable locks are a great deterrent for potential bike thieves and should be used in conjunction with a heavy-duty U-lock for added security.

Are combination or key bike locks better?

There are two types of bike locks: chain locks and U-lock locks.

Chain locks are known for their relative ease of system manipulation. They are also known for their relative ease of system manipulation. The length of the chain often determines this trait. It's best to find a chain lock that's easy to lock around both wheels and any other valuable part of your frame and bike.

U-locks and other key locks are popular for how hard it is to work the lock mechanism. U-locks are typically strong and tight. Their only (very important) downside is weight. They are heavy, which can make carrying them through a street or over a fence a bit of a challenge.

Conclusion

There is just one reason to lock your bike: to prevent it from being stolen. In that case, one good bike lock can make a world of difference. That’s why we are committed to looking at so many different locks to find the best of the best that can fit well into a busy cyclist’s life. We believe that you should be able to find the perfect lock, giving you the peace of mind that your bike will stay yours. And once you find it, it will last forever.

Our Recommendation

NameCategoryProduct
Kryptonite Keeper 785 Integrated Bicycle Lock Chain Bike LockBest OverallKryptonite Keeper 785 Integrated Bicycle Lock Chain Bike Lock
Master Lock 8143D Combination Bike LockBudget PickMaster Lock 8143D Combination Bike Lock
Kryptonite New York LS Heavy Duty Bicycle U Lock Bike LockUpgrade PickKryptonite New York LS Heavy Duty Bicycle U Lock Bike Lock