10 Trendy U Lock Reviews | Best U Locks For Bikes To Protect

Confused to buy the best U locks for bikes?

If you have never purchased before, it is not easy to choose the best one to pick, we think that you’re here to have the best suggestion, right?

As you don’t have any idea that which one will bring the perfect feature and advantage for you then this article is going to help you out.

What should you do now?

Just pause here to BOOM!

Let’s be with us and we’ll try to give you the idea of the best U locks for bikes.

First, let’s talk about U lock and should know what U-lock is.

What is U lock?

U lock is a popular U shaped bike lock that is also known as buckle lock or D lock. Its name is U lock for the design of a U shape. From another perspective, the lock looks like D so some people also called it D lock.

It does have a U shaped shackle and it can be used as bike lock and door lock as well.

And U-Locks are popular for their smart and unique design, and the mounting brackets.

Should know about it.

Mount bracket is only seen in U lock among all types of bike locks. This type of lock comes in a few typical sizes: 4×9, 3.25×7, and 4×11.5. The smaller the lock, the more secure and the more safety it is against prying attacks. But on the other hand, the larger U lock provides the eligibility to lock more than one bike at the same time.

best u locks for bikesWhy do you need it?

For the city bikers, U lock is an inevitable stylish gadget. But this is not the reason that they buy for. The reason is to secure their bike and prevent it from being stolen. You can use some cheap cable lock to lock your thousand dollar bike but do you really think this is really going to be worth it?

The main characteristic of the bike lock is locking your bike to protect from thieves. So what’s the value of a bike lock if it can be breakable?

Considering the durability and security U lock has no other competitors to hold it back or pull it down.

So if you want to save your bike not saving some dollars, then you already know why you need it, don’t you?

The 10 Best U Locks For Bikes-Reviews

Now, you’re going to know the top 10 U locks that let you secure your street stuff.

1. Kryptonite Kryptolok Series 2 Review

Kryptonite is known well to the customers for their dedication to the consumers and the strong product quality. In 1972 Kryptonite founder directed to lock a three-speed bicycle to a signpost in Greenwich Village. Thieves stole all of the bicycle’s removable parts that were not possible to lock with bike locks but the bicycle itself remained on the same place for 30 days and 30 nights even after the lock had been attacked so many times. Twenty-two years later, in 1994, the company made an experiment again on the streets of the Big Apple to test its latest innovation, the New York lock. This is the city where around 100,000 bikes are stolen each year. But in this experiment also the bike remained locked up on the same place full of 48 hours. In 2004 they replaced more than 400,000 locks in 21 countries for free.

This model of Kryptonite series bike lock also has some basic features that you will usually see other bike locks. But this also has some individual flair features. This a little bit sturdy bike lock to carry and travel with because its weight is 3.59 pounds. The Kryptolock series 2 standard is the upgraded version of Krypto lock series. It launched and replaced with its new and better design and functionality in 2017. If you look over or observe the two versions of Kryptonite series, you will discover some changes like dust cover. It was a rotation system in the previous version and in the new edition, it has a sliding dust cover which is more flexible to use.  The old and new one both have same score 6 out of 10 in kryptonite moderate security score level. So you can be assured that this is neither easy to break, nor impossible, but in a low crime area, you can be relaxed using this.

best u locks for bikesview on AmazonIf you want, can lock anything like any object as in backpacks with the 4-foot double loop flex cable. This flex cable of the model is long enough to secure any middle sized object and can secure through front tire.

The U portion of the lock is quite big, so you can get the edge of the railing to lock it.

13mm high performing steel shackle resists cutting and leverage the accidents. This hardened shackle is handling the security but with this strong crossbar design, add more value in protection. Besides all these security assured features, the high-security disc-style cylinder is also creating a value for itself.

When you are riding you will hear some noise before if you used others bike lock, but in this model of Kryptonite, it is included with anti-rattle bumpers that help to reduce noise when you are riding the bike or cycle.

Finally, you will reach the pinnacle of the comfy feeling with this new version of Kryptonite series. This is not only flexible but also provides you better security than ever before and also it is a budget bike lock for anyone.

Click here to see the latest price on Amazon and read customer reviews.

2. SIGTUNA Bike Lock Review

Let’s start with the heavy bike lock from Sigtuna.

Sigtuna Wodan bike lock is such a piece of mind that will give you the highest security. You can get to know about the sturdy look of it, but this means the quality. This is so tough nut for bike thieves. It has 1 x 16mm Hardened Steel U-lock Shackle which extensively ensures your bike from being stolen. It also has a High-Security Disc-Style Cylinder.

To give you more assurance and not to worry at all, this will give you the double time assurance because the double deadbolt locking mechanism belongs to this. The rubber coated shackle protects the bike scratching from lock body.

This bike lock will come with 3 Laser-Cut Abloy key locks that are made from protective Vinyl Coating which has the ability to protect your bike’s paint.

Now thinking about installation and how to use it?

sigtuna bike lock reviewview on AmazonDon’t worry at all. This bike lock is as easy to install your bike that even a kid can use it by himself perfectly. So this is very easy to fit in any types of bikes. It comes with a Mounting bracket so that you can carry it everywhere and even when you are riding you can carry the lock easily. The mounting bracket has only one button to release and hold back the entire system.

If you want to secure your other things as in helmets, bags, etc. Can do it with 1 x 1200 Woven Steel Double Loop Flex Cable then all you just have to do is to loop it back and lock to secure for a long time.

At the same time, you can lock several bikes with the 1200 mm braided flex cable which is included to make sure the extra level of security.

This bike lock is so useful to athletes that you can use it even they can use it even if they don’t have much space. So you can mount your lock outside of the bike frame.

The lock has the ability to lock your frame of poles and even to lock different parts of your frame because the inner dimensions of this model WODAN are 200 x 105 mm. And along with the U shaped portion the Flex Cable also able to lock your bike on to almost anything.

To give your lock sustainability it has a keyhole cover that is flexible and protects the key portion against dirt and corrosion. Thus, it protects the locking mechanism for a long time usefulness.

Click here to see the latest price on Amazon and read customer reviews.

Full Review: Sigtuna Bike Lock Review | Safe Your Bike Easily

3. Kryptonite New York Fahgettaboudit Mini

This piece of mind has a New York vibe in the name itself. Besides the name, even in the body, it is engraved with the picture of the statue of liberty that attracts more the regional people or people who like New York culture. “Fahgettaboudit” sounds cool, right?

This name is not only cool in uttering this, but this heavy bike lock has also made sure the worth of its name. You can really forget about the bike or anything locked with this. There is no chance for burglar anymore. This specific device is made for giving more security to the city dwellers and also people who live in outside of New York City or even in another country.

This Kryptonite New York Fahgettaboudit U-lock features an 18mm hardened Max-Performance steel shackle which is designed to resist bolt cutters and leverage attacks. This bike lock has the best use of it for anyone who lives in high crime areas. This is one of the best bike locks and is enlisted in the top 10 security assured bike lock of Kryptonite.

best u locks for bikesview on AmazonFor high and double security this oversized patented steel sleeve crossbar is the best. Its double deadbolt locking mechanism excels the power of extensive holding of the bike. The stylish sliding dust cover will protect the cylinder to give it a certain longer lifetime.

Since we all always forget about the keys, here’s the good news for us because it provides 3 stainless steel keys and more interestingly one key is with high intensity led bulb which is replaceable by a battery.

Click here to see the latest price on Amazon and read customer reviews.

To see the new model: Kryptonite New-U New York Fahgettaboudit Mini Heavy Duty Bicycle U Lock Bike Lock

4. Kryptonite Evolution Mini-7 Review

Kryptonite is one of the best pioneer company in manufacturing bike locks. They carry the prominence from the right after they started the journey. Each Kryptonite bike lock has its own flair for vanishing and furnishing your problem. This model of Kryptonite 2079 brings the evolutionary changes in U lock bike industry that the name shows well- Kryptonite 2079 New-U Evolution Mini-7. This is super easy to carry for anyone with extremely high-level security. This bike lock is made with 13mm hardened max-performance steel shackle that is strong enough to resist bolt cutters and leverage attacks. Its hardened double deadbolt also helps to secure the bike strongly. The sliding dust cover protects your locks from damaging by dust and keep it clean and make it long-lasting.

kryptonite 2079 Newview on AmazonIf you are someone who loses keys frequently then Kryptonite can work for you very well with its 3 keys which are made from stainless steel.

Now, what about if you think of traveling with the lock?

This is also a feature that this Evolution Mini-7 of Kryptonite will provide you with the U-mount bracket. This mount bracket is so flexible to fit on your bike frame that it is called FlexFrame. With this FlexFrame, you can go far away so it is convenient for the multi-location U-lock transport system.

The higher security disc-style cylinder is irresistible to break and it is drill resistant.

Furthermore, this bike lock is that much high functioning that you can experience the zenith of the security assurance.

Click here to see the latest price on Amazon and read customer reviews.

5. OnGuard U-Lock

If you are looking for a medium or even a low budget bike lock, then Onguard can be a better option to consider. At budget price, you also can have high-level security if you use this. Onguard gives their Bulldog DT lock 65 out of 100 which they consider high quality in terms of security. Its 13mm hardened steel shackle resists cutting jacking, prying. Recently they have re-designed their cylinder portion for the betterment and it is really working well. The cylinder is bump proof and it is resistant to picking, drilling and pulling. The double locking mechanism locks the shackle from both sides that gives double time security from being stolen. Onguard Bulldog has achieved a solid silver rating by the independent lock secure tester, sold secure. You also will have 4 ft and 10 mm thick braided cable with this easily you can fasten any object or precious things.

If you want to consider the flexibility or weight, then it is the lightest bike lock comparison to other bike locks in the same types and budget range. The weight is only 3.4 pounds (shipping weight) that you can carry from one place to another. For transportation convenience, you also can use a mounting bracket to hang up the lock.

OnGuard Bike Lockview on AmazonNow about the easy installation or fastening process. The Bulldog bike lock has the same locking mechanism that other high branded bike locks are made of, put the shackle into the crossbar and pull back the key. As the key topic comes so it is inevitable to discuss losing keys. Who doesn’t lose keys once in a year at least? The number is rare, right? But Onguard has the 5 guard keys to its customer because they value their customers. And even by online key registration, you can have your replaced key if you lose your keys. Another coolest thing about this bike lock key is, it will help you to find keyhole when you are in the dark. Are you confused or amazed thinking how even it is possible? Well, they are offering you one LED light supported key.

Among all of these pros, there is also a con that is, you will never get any dust cover to protect your cylinder from the outside dust and germs. So sometimes the locking system can collapse for some seconds, but if you use any lubricant that can save you from the suffering.

This bike lock has so many positive issues and, nevertheless, the bike got stolen? In that case, a registration for the anti-theft program by Onguard can save you. They will give you up to $1501 (2018) considering the security quality of the bike lock and only if the bike is stolen for a broken lock. To use this opportunity you must need to register within the first 15 days of purchasing the bike lock and this is not free at all. You have to pay $1 for 1 year, $10 and $20 for 2nd and 3rd year gradually. But to get the compensation money there are some applicable conditions that can’t be violated.

Click here to see the latest price on Amazon and read customer reviews.

6. Amazer Bike Lock Review

Amazer bike lock is another prominent bike lock brand that has some cool advanced featured bike locks. It has a 12 mm Heavy Duty Combination is one of the unbeatable bike locks among other bike locks. The more a biker love this bike lock the more the thieves hate it for the same reason, it’s great, isn’t it?

High-Quality-Security. Yes! This has high quality and advanced feature and that is password combination. It is the lock which has no keys. The password has to be within 4 digits because this is the 4 digits password locking mechanism locks which give you around thousands of possibilities. For this password facility, it gets harder for thieves to break. Sometimes you may forget the password in that case you are a little bit in trouble, but if you reset the factory data then it will be useful again.

amazer bike lockview on AmazonAlong with this super password combination system, there are also some more advantages of this bike lock that give your bike high security. Amazer heavy bike lock has premium level material. It is made with 12 mm hardened performance zinc alloy shackle and also covered by 3.85 mm PVC coating. The PVC coating on the U helps to prevent it from scratching bike paint. The zinc alloy shackle also assures your bike security because it is able to resist cutting and leveraging attacks. This lock also has a dust cover which gives the lock cylinder a durable existence and prevents from weather and corrosion.

Click here to see the latest price on Amazon and read customer reviews.

Full Review: Amazer Bike Lock | Secure Your Bike With The Smartest Locker

7. Kryptonite New York Standard Review

Do you have a precious bike?

Then you must be in need of a bike lock. And choosing the bike lock Kryptonite is one of the best brands. In this article, we have included several Kryptolock bike lock and Kryptonite New York Standard is one of the finest bike locks in their bike lock funnel. Kryptonite New York standard also has the great quality assurance like other bike locks of Kryptonite. The design of Kryptonite New York Standard provides higher security that the thieves got defeated to steal your bike.

It has a 16 mm thick shackle which has made the bike lock resilient against any attack by bolt cutters and any other hone cutting accessories.

Kryptonite New York Standard has 4 inches width and 8 inches length which helps you to fasten your bike with any large object because the dimensions are bigger enough. The design was invented thinking the college-going students so that they can collapse it in the campus railing.

Kryptonite new york standardview on AmazonThe weight of this bike lock is around 4.35 pounds which seems heavy than any other bike locks but the materials are premium. So the premium materials made whole bike lock so heavy that it is tough to carry but also barely breakable by thieves. This one is suggested for the bunch of bike lovers who value the security than flexibility.

The 16 mm shackle have patented hardened steel sleeve and double deadbolt locking increase the level of security by protecting the shackle from any kind of attack by sharp cutting tools. The use of vinyl coating as a material in the bike lock eradicates the corrosion of the lock and gives it durability.

You will also have a sliding dust cover for keeping it resistant from the weather, 3 keys with one having LED light support.

Click here to see the latest price on Amazon and read customer reviews.

8. U-lock Bike lock – Resettable Combination

To solve your problem of losing keys frequently, steadfast brings the resettable combination, U-lock bike lock. With this, you don’t have to carry your keys further. Even it is possible for choosing your own combination and make it unique and more protective. Can choose your passcode over around thousands of combination but while choosing or setting your password to remember the lock keep open. You should choose an easy password so that you face no barriers to retrieving the password. Even if you forget, the 4 digit locking mechanism has reset option that gives you another opportunity if forget your own password combination.

best u lock bike lockview on AmazonThe 14-millimeter shackle made of high-grade steel to ensure the security and a water-resistant coating provides heavy duty security for the bike. This lock is so light with only 1.2 pounds and 5 x 9 x 1 inch in dimensions. Steadfast’s U lock bike lock is easy to put it around your bike seat while riding. You also can carry it in your bag freely without even realizing that something is in your bag.

Click here to see the latest price on Amazon and read customer reviews.

9. Lumintrail LK20708 Combination

Do you often lose your keys?

If your answer is, ‘yes’ then the Lumintrail LK20708 Combination can be a helpful device for you. Need not to bring your lock keys anymore if you use this because the system will give a user-settable password system with the added strength and dependability of a U-lock. This 4 digits can make thousands of combination. Can choose your own unique password and make the bike forever secured. And even if you forget the password combination, there is nothing to worry at all, this device is easily resettable so can reset your password combination again.

Lumintrail LK20708 is made of powerful 14mm hardened high-grade steel shackle which provides the high-quality security that can resist thieves from cutting, prying, or jacking. To extend the security level, the company provide 4 foot and 12mm-thick braided steel cable by which you can secure your front wheel and other accessories from cutting and being stolen. The braided cable is long enough that you can loop the object double time to give it a little bit more security.

Lumintrailview on AmazonHere the Rubber-coated crossbar cover will protect your paint and finishes of our bike from scratch. The Lumintrail LK20708 will come up with quick release frame mounting bracket. And this multi-purpose carry bracket will help you to carry your bike lock here and there and you will be able to hang your lock by this when you are riding.

This Lumintrail LK20708 is so preferable to anyone for its high security, keyless combination and easy to use and installation. So this can be a good try for you.

Click here to see the latest price on Amazon and read customer reviews.

10. Cocoweb Heavy Duty Bike Locks

And finally, last but not the least, Cocoweb Heavy Duty Bike Locks will land on your hand from the manufacturer with a mounting bracket and double loop cable and with keys because this is not a keyless resettable combination base locking system.

The mounting bracket works as same as other brands do. This will help you to transport the locks with you everywhere. You can hang up the mounting bracket in any place of the bike frame or in the back seat. The double loop cable will extend the security of shackle. Here is a chance to secure and fasten any object with this loop cable. The high grade 14mm solid steel shackle that is wrapped with 2mm PVC coating to protect your bike from scratching and damaging.

cocoweb heavy duty bike locksview on AmazonCocoweb bike lock has weather guard feature which keeps harmful weather element out of the lock and spares the body part from rusting.

Overall this is so reasonable but it’s a bit sturdy to carry for its 4.4 pounds weight and the keys sometimes drive the buyers away.

Click here to see the latest price on Amazon and read customer reviews.

Buying Guide

After going through the article it is really hard to say that which one or two bike locks are the best or have high quality. Despite the fact, after a painstaking speculation, we have come up with some best U-locks for bikes that are really a little bit different with their high and flair quality. This sum up decision is based on the quality features, high security, customer service, and budget price. We will start with the 3rd ranked bike lock. According to our tough analysis, the third one is OnGuard Bulldog DT U-Lock and then Amazer heavy Duty bike lock and the top-ranked one is undoubtedly from Kryptonite. Can you guess the dope name? yeah! It’s Kryptonite New York Fahgettaboudit Mini, the best U-lock ever.

Though the Onguard’s bulldog is almost similar to Kryptonite’s Fahgettaboudit Mini Kryptonite has more brand value and more quality than any others. The bulldog is useful for low crime area and in against Fahgettaboudit is made considering to give the dwellers a better-secured life. On the other hand, it Kryptonite’s Fahgettaboudit has more security rating by selling securities. The bulldog is considered as mid security bike lock, but most users consider the Fahgettaboudit as the super secured bike lock. This one is made for securing the city bikers’ life in New York City. And finally, the customer service of Kryptonite will please you every time.

Now Amazer bike lock got second place in our list because it strongly has the ability to serve you high-quality security. Besides this, the keyless 4 digits password combination is so relaxing and fascinating to the users. But this is also not that strong bike lock compared to Kryptonite and also has less insurance facility with less customer service facility.

Final Words

Now, you are here, after reading this big article about the best U lock for bikes that we’ve written doing more research on the bike lock, what is your thought right now?

We can say confidently that, if you’re in the market to buy the best one, now should stop searching because it’ll be better to pick from this list, where 10 trendy bike locks have.

But if you’re in online to pick the best one, yeah, now no need to waste time to search the bike locks, read the Buying Guide again and make a decision to BOOM!

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