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The Best Bike Locks of 2025

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person riding a bike into the sun Credit: Getty Images

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Product image of Kryptonite New York Standard Heavy Duty Bicycle U-Lock

Kryptonite New York Standard Heavy Duty Bicycle U-Lock

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Made of 16 mm hardened max-performance steel, this lock is super heavy-duty and is said to have survived crowbars, hammers, and even a hacksaw. Read More

Pros

  • Withstands a lot
  • Key safe program

Cons

  • Expensive
  • Lock might jam
Product image of Abus Ivera Steel-O-Flex 7200/85

Abus Ivera Steel-O-Flex 7200/85

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The Abus Ivera Steel-O-Flex has 22-millimeter overlapping hardened steel shells to protect the inner steel cable. Read More

Pros

  • Heavy-duty protective coating

Cons

  • Bulky when riding
  • Key may jam
Product image of Kryptonite Kryptolok 12.7 mm U-Lock

Kryptonite Kryptolok 12.7 mm U-Lock

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Another fantastic lock from Kryptonite, the Kryptolock is a 12.7 mm U-lock with an additional 10-millimeter looped cable for additional security. Read More

Pros

  • Double deadbolt lock
  • Mounts to bike for storage

Cons

  • Key might stick
Product image of Sigtuna Bike Lock

Sigtuna Bike Lock

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The Sigtuna bike lock is a great, inexpensive alternative to other bike locks on the market. Included with the U-lock is a cable for extra security. Read More

Pros

  • Comes with 4 ft cable
  • Affordable

Cons

  • Lock may jam
Product image of Via Velo Bike U-Lock with Strong Cable

Via Velo Bike U-Lock with Strong Cable

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This lock is great for all weather due to its PVC covering and the hard lock cover to protect the keyhole from potential rust. Read More

Pros

  • Affordable
  • Easy lock mounting

Cons

  • Might be tricky to mount lock on some bikes
  • Kryptonite New York Standard Heavy Duty Bicycle U-Lock
  • Abus Ivera Steel-O-Flex 7200/85
  • Kryptonite Kryptolok 12.7 mm U-Lock
  • Sigtuna Bike Lock
  • Via Velo Bike U-Lock with Strong Cable
  • Types of Bike Locks
  • What to Look For in a Bike Lock
  • Where to Lock Your Bike
  • More Articles You Might Enjoy

If you live in a city, then you know the anxiety that comes along with riding a bike. But worrying about how to secure your bike shouldn’t be one of your concerns.

We’ve all seen bikes left outside that have been scavenged and stripped for parts—or, even worse, the ones stolen and ditched somewhere along the way. I recently found an amazing vintage bike out with the trash, and after fixing it up for me, my boyfriend made sure I was all set with the type of lock I could trust, no matter where I was locking up.

After researching thousands of reviews on Amazon, we compiled a list of the best bike locks you can get to keep your head and eyes on the road, instead of worrying about bike thieves.

Product image of Kryptonite New York Standard Heavy Duty Bicycle U-Lock

Kryptonite New York Standard Heavy Duty Bicycle U-Lock

Kryptonite is well known for their heavy-duty bike locks, offering a bevy of options to keep your bike safe. Reputed to be the best bike lock from Kryptonite, the New York Standard is a heavy duty U-lock with three keys, one of which includes a handy replaceable FOB light for use in the dark.

Made of 16-millimeter hardened max-performance steel, this lock is super heavy-duty and is said to have survived crowbars, hammers, and even a hacksaw. With the option to enroll in Kryptonite’s anti-theft protection program, you can have the peace of mind that if your lock fails, you can lean on some reimbursement for a new bike.

It should be noted, though, that the lock has to be left behind in order for Kryptonite to honor the program. And it requires registering your vehicle's serial number with Kryptonite first. If you’re prone to misplacing things, like I am, then you’ll love the Kryptonite Key Safe Program, which means that Kryptonite will ship your first two keys for free, in the event that you lose them.

Like some other bike locks, reviews mention that the lock jams frequently, but we wouldn’t let that deter you from purchasing one.

Pros

  • Withstands a lot

  • Key safe program

Cons

  • Expensive

  • Lock might jam

$107.78 from Amazon


$151.95 from Walmart

Product image of Abus Ivera Steel-O-Flex 7200/85
Abus Ivera Steel-O-Flex 7200/85

The Abus Ivera Steel-O-Flex is a flexible lock and chain that makes it easy to lock up in a variety of situations. It has 22 mm hardened steel shackles to protect the inner steel cable. This also means that the lock won’t damage your bike or rust when left outside.

The Abus lock comes with two keys so you can keep one somewhere safe. But the keys are said to jam from time to time, so you’ll want to keep that in mind when locking and unlocking your bike.

With real security comes some bulk, and reviews mention that this lock is a bit heavy, which can be annoying to bike with unless you can toss it in a bag or backpack. We’d suggest using the Steel-O-Flex with an additional U-lock for extra safety.

Pros

  • Heavy-duty protective coating

Cons

  • Bulky when riding

  • Key may jam

Buy now at Amazon

Product image of Kryptonite Kryptolok 12.7 mm U-Lock
Kryptonite Kryptolok 12.7 mm U-Lock

Another fantastic lock from Kryptonite, the Kryptolock is a 12.7-millimeter U-lock with an additional 10-millimeter looped cable for additional strength. This lock is great if you want an extra level of security, and it can be easily looped through your wheels.

As is with other Kryptonite bike locks, the Kryptolock also comes with the Key Safe program in case you misplace your keys and you have the option to enroll in the anti-bike-theft program. One review of the Kryptolock mentions that the lock actually broke the attempted robber's crowbar and stayed in pristine condition.

People are fans of the double deadbolt, because it means that someone would have to make two cuts instead of one in order to steal your bike. Kryptonite even has a chart to help you pick the best bike lock for your security needs, in case you want some extra peace of mind in your decision making.

As is with other locks, the keys might stick in the lock from time to time, but this doesn’t seem to be a huge issue with this one. What we love about this lock is that it comes with a mount for easy storage while you’re riding your bike.

Pros

  • Double deadbolt lock

  • Mounts to bike for storage

Cons

  • Key might stick

$54.71 from Amazon


$72.95 from Walmart

Product image of Sigtuna Bike Lock
Sigtuna Bike Lock

The Sigtuna bike lock is a great, inexpensive alternative to other bike locks on the market. Included with the 16-millimeter high-performance steel U-lock is a four-foot cable for extra security.

While this bike lock is a little bit heavy, it does come with an easy to install bike lock mount, making it easy to store when you’re out on your adventures. Despite the low price of this bike lock, the reviews offer high praise. But this bike lock does have a lock of reports of the lock jamming, so keep that in mind when you are deciding on whether or not a deal is worth it.

Security reviews mention that the Sigtuna bike lock is great when matched up against bolt cutters as well as a drill so if you don’t mind a lock jam every once in a while this really is a great option.

Pros

  • Comes with 4 ft cable

  • Affordable

Cons

  • Lock may jam

Buy now at Amazon

Product image of Via Velo Bike U-Lock with Strong Cable
Via Velo Bike U-Lock with Strong Cable

The Via Velo bike lock comes with both a U-lock and a six-foot cable lock. This lock is great for all weather due to its PVC covering and the hard lock cover to protect the keyhole from potential rust.

Sturdy but not cumbersome, it’s easy to click your lock into the bike lock mount and tuck it away during your rides, though some reviews mention that they’ve had a hard time finding a spot on women’s bikes. Boasting a smooth lock and unlock, the Via Velo is my personal favorite and I worry less knowing that my bike is protected by the Via Velo lock.

Included in your purchase is a three-year warranty, and reviews mention that the customer service is fantastic. One person had an issue with their key not working and the issue was fixed for them within days. The Via Velo bike lock is great for people with mountain bikes, or bikes with bigger frames that have to leave their bike out for long periods of time, and even e-bike riders are pleased with the functionality of this bike lock.

Pros

  • Affordable

  • Easy lock mounting

Cons

  • Might be tricky to mount lock on some bikes

Buy now at Amazon


$36.96 from Walmart

Types of Bike Locks

U-Locks

If you’re looking for something ultra-theft proof, U-locks (sometimes called D-locks) are the lock for you. Compact and easy to carry, they offer a high level of resistance to bolt cutters and leverage attacks as well, making them a great choice if you’re parking your bike in an area known for theft. They work well with bike racks; however, given their rigid shape, they may not be a good option for the largest bike frames or for anyone who needs to lock their bike to thick posts.

Chain Locks

For riders who need the flexibility to lock their bikes to whatever object is handy – a tree, lamppost, bike rack, or anything else – chain locks are a versatile option. The chain link construction offers more resistance to bolt cutters and other cutting tools than cable-style locks do, but they are heavier and bulkier than other options.

Thanks to their adaptability, chain locks can wrap around a variety of objects—parking meters, trees, or lampposts. Made from hardened steel links, they resist cutting tools more effectively than cables.

Folding Locks

Folding locks take a page from chain locks, using steel bars attached together by rivets that lets the lock fold down. Like a chain, they’re good for wrapping around a variety of objects, and like a cable, they don’t take up a lot of room when not in use. They’re not as resistant to cutting as U-locks or thick chains, but they offer better protection than a cable lock in a flexible format.

Cable Locks

Cable locks, made of metal wire usually coated in plastic, are ubiquitous for a reason: They’re affordable, lightweight, easy to use and easy to carry. However, they’re more for deterrence than anything else: Any potential thief armed with a cutting device can cut through almost any cable lock in seconds.

What to Look For in a Bike Lock

Weight and portability

Even a small amount of weight starts to feel burdensome when you’re carrying it around, and a heavy bike lock is no exception. Unfortunately, the heavier locks are often the most secure – thick chain locks, for example, can weigh more than 5 pounds. Before you buy, consider how much security you need (are you parking your bike in areas known for theft? Will your bike be unattended for long periods?), as well as your normal riding routine (how far do you ride, and how hilly is the terrain? Do you normally have a bag with you or do you need something that can fit in a pocket or around your waist?) and make sure that the lock you choose will be one you can happily carry around.

Durability

We put our bike locks through the wringer, outside all day where rain, snow, salt, dirt, and direct sunlight can all cause damage, corrosion, and rust that can render your lock ineffective. To get the most use out of your lock, look for elements like rubber or vinyl coatings that protect the metal underneath (and protect your bike frame from scratches, too), sleeves made from polymers or composite materials that cover locks and chains, and hardened stainless steel shackles that can resist damage.

Your Lifestyle

Knowing where you normally lock your bike can dictate what kind of lock you buy – while you may be attracted to the compact shape and strong cut resistance of a U-Lock, no U-Lock will help you lock your bike wheels and frame to a tree, if that’s what you normally use. Similarly, a chain lock might give you maximum flexibility for locking your bike up in a variety of locations securely, but if its length and size make it hard to squeeze into a narrow slot in the bike rack you use every day, you may not end up using it. Whether you’re a recreational rider who stays to paths and local spots with racks; a hardcore adventure rider who needs to find unorthodox spots in nature to lock up; or a seasoned commuter with the whole city as their playground, there’s a lock that fits if you’re looking.

Where to Lock Your Bike

Urban Areas

When locking your bike in a city setting, your best option is to put your bike where people are looking at it – a highly trafficked area where people or visible security cameras are watching is an unattractive spot for thieves to operate. Bike racks at subway and bus stations, as well as in retail or commercial centers, can also be excellent spots. If you’re in a neighborhood setting or another area where racks aren’t an option, lamp posts, railings, and fences can be a good choice so long as they’re in plain sight and securely attached themselves.

Suburban Areas

In less densely-populated areas, riders sometimes let down their guard – but bike thefts can happen anywhere, especially to bikes left unlocked for “just a few minutes” while their owner is elsewhere. Just like in urban areas, finding a well-lit and secure place to lock your bike is key – to a bike rack if one exists, and if not, handrails, lamp posts, and sturdy fences are a good option.

Schools, Parks & Trailheads

The good news is that schools and parks often have bike racks provided for cyclist use – where they don’t, locking your bike to a railing or sign post, ideally near an entrance or playground or other place where there’s consistent foot traffic, is your best bet. Some trails have racks, or even bike lockers, which are both excellent options. If not, take extra care to lock your bike securely (wheels and frame where possible) to signposts or other permanent structures, especially if you’re riding an expensive, technical bike.

Meet the writer

Ceara Perez-Murphy

Ceara Perez-Murphy

Staff Writer

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Ceara Perez-Murphy is a staff writer at Reviewed. In her free time she likes trying out new recipes in the kitchen, exploring new restaurants and spending time outdoors with her dogs.

See all of Ceara Perez-Murphy's reviews

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