Best Bike U-locks | Top U-locks for Bicycles
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Are you looking for the best bike U-locks? Well, you’re on the right site but let me first introduce you to bike U-locks. Bike U-locks (also known as D-locks or buckle locks) appear to be exactly what they say.
In terms of parts and specifications, a bike U-lock is usually quite easy. The majority of bike U-locks are made up of a shackle, a crossbar, and a spline. In this article, I’ll show you the top nine u locks available to cyclists. Because this information has been properly researched, you may buy with confidence.
So here are our top 9 best U-locks for bikes we selected for you.
Top 9 Best Bike U-locks
Without further ado, here are the top 9 best bicycle U-locks of this year.
1. Kryptonite New York Standard Heavy Duty Bicycle U Lock
2. Kryptonite New York LS Heavy Duty Bike U Lock
4. Sigtuna Gear – Best Budget
5. Amazer Heavy Duty Combination - Best Affordable
6. Kryptonite Kryptolok Series 2 Mini-7
7. Abus Mini Round Shackle – Best for Mountain Bikes
8. Kryptonite Evolution Series 4 Heavy Duty U-lock
9. ONGUARD Double-Team PITBULL U-lock and Cable
Best Bike U-lock Reviews
This post will go through the features and reviews of the best bike U-locks that will undoubtedly prove their worth if purchased.
We will also be going through the pros and cons of each lock to make it easier for you to figure out which one is the best.
Let’s get into the depth review of the best U-locks for bicycles.
1. Kryptonite’s New York Standard Heavy Duty Bicycle U Lock
Key Features:
- Ten-point security rating
- Hardened steel sleeve for double security
- Two deadbolts and a locking system
- Anti-pick cylinder with a disc
- Scratch- and a corrosion-resistant vinyl coating
- Dust cover
If you’re looking for a beast of a lock, Kryptonite New York will not disappoint. It is our top selection for a variety of reasons, including its incredible longevity, anti-pick disc, dust protection, and a security grade of ten.
It’s created by Kryptonite and includes all of the company’s trademarks.
Lock breaking and leverage attacks are exceedingly difficult to defeat using this model. Lockpickers and bolt cutters will be unable to open the door. Let’s have a look at the key characteristics of the lock:
Kryptonite New York is a standard-sized u lock with a length of 8 inches and a width of 4 inches. As a result, there’s enough room for the bike to be secured to a number of items, such as bike racks, rails, and posts. Because it isn’t too small, it can’t be easily broken with a bolt cutter.
Double Deadbolt Locking System: Both ends of the shackle are attached to the shafts, not just one. The burglar must cut both shafts to unlock the lock, which is a challenging undertaking.
Kryptonite New York is protected from scratches, rust, corrosion, and other natural elements with a vinyl coating. As a result, even after years of use, the lock’s performance is unaltered.
The anti-pick disc keeps the lock mechanism from being unlocked.
Mounting Adapter Strap: When the lock is not in use, the adapter strap that comes with it can be used to mount it.
What I like
It has a 16mm shackle, deadbolt design, vinyl coating, and steel sleeve over crossbar that no other lock can match in terms of durability.
The dust cover and vinyl coating, which protect against dust and other natural causes, make the lock tough to pick and meant to survive for years.
It’s unusual to find a lock with so many capabilities in this price range.
What I don’t like
The adapter strap wiggles a lot and rubs against your legs. The solution is to secure it using tape.
Pros
- Exceptionally long-lasting
- It can withstand the elements
- Three keys are included, as well as a master key with an LED function
- Limited lifetime warranty is provided
Cons
- A little on the pricier side
2. Kryptonite’s New York LS Heavy Duty Bicycle U Lock
Key Features:
- Offers great resistance
- A steel sleeve over the crossbar
- Disc with an unpickable cylinder
- PVC coating, safe for bike and lock
- A movable dust cover
Another Kryptonite lock comes in second place on our list, with the same level of durability as our top pick but with a few minor variances such as a security rating of 9 and slightly different dimensions.
It offers the same level of resiliency as our top pick because it is built of the same materials. It’s slightly larger and includes anti-theft measures.
The following are some of the most important characteristics of the lock:
With a length of 10.2 inches and a width of 4 inches, it’s a good size. It’s now easier to lock both smaller and larger framed bikes, thanks to the extra length.
Kryptonite lock includes a double lock system, so even if one shaft is damaged, the lock will still function.
Dust Cover: The sliding dust cover protects the keyway from dust and rust. As a result, the lock will keep working for a long time.
Anti-Pick Disc Cylinder: The lock system can only be opened with a key and is impossible to pick with any tool.
Mounting Adapter Strap: For mounting the lock while riding the bike, an EZ mount transportation adapter strap is included.
What I like
It safeguards you in a number of ways. The lock’s 12mm steel shackle, PVC covering, and sturdy locking mechanism make it nearly impossible to fool with. In addition, the company offers an anti-theft policy that covers the cost of your bike if it is stolen. You must, however, make an account on the website first.
What I don’t like
The mounting bracket is pretty substantial and causes some difficulties when riding the bike because it is not completely secured to the frame.
Pros
- The level of protection has been raised
- The length has increased
- It can withstand the elements
- A master key with an LED function
- Extra keys in case original ones are lost
- Limited lifetime warranty
Cons
- Massive, weighing 4.4 pounds
3. ABUS Granit X Plus 540
Key Features:
- Long shackles for major attacks
- ABUS security grade of 15/15
- The shackle is made of German steel
- Power Cells have a locking system
- Two bolts are used
- A protective covering is placed over the shackle
ABUS Granit X Plus 540 lock, like the others, has a gold grade, meaning that it is among the best when it comes to security testing. ABUS, a company that specializes in high-quality locks, created the lock. This article provides an in-depth look at the Granit 540 model.
To make prying, pulling, or breaking the shackle more difficult, it has slightly pointed ends. It’s also long enough to connect two bicycle frames.
If you’re looking for a U lock that will give you peace of mind when you park and lock your vehicle, this U lock is a great option.
ABUS Granit X Plus 540 lock is a bit pricey, but it’s well worth the money!
Power Cell Lock Mechanism: The shackle’s revolutionary Power Cell locking system can withstand a pulling force of 17 tons.
The shackle is also fastened twice. Because both shafts must be shattered, no thief will be able to break it quickly, even with the sharpest equipment.
ABUS Granit X Plus 540 lock can bind two bikes at the same time and is designed for bikes with a frame that measures 11.6 inches long and 7 inches wide.
Due to pick protection included in the disc’s internal construction, the lock is difficult to pick with any picking device.
What I like
It’s rather long and wide, and it’s composed of high-quality materials that can’t be easily jacked up.
It has the ability to sustain a significant amount of pulling power.
What I don’t like
Despite the premium price, there is no mounting bracket.
Read our full evaluation of the Abus Granit X Plus 540 bike lock.
Pros
- It can’t be pulled or broken using traditional tools
- There are two keys provided (1 LED key)
- You can replace your keys if you lose them
- It has a beautifully curved shackle
- Light in weight
Cons
- A little on the pricier side
4. Sigtuna Gear – Budget-Friendly
Key Features:
- Provides double security
- Compatible with foldable bicycles
- A mounting bracket holds the lock in place
- Impossible to pry, pull, or break
- Hard to break
A shackle and one-button release mounting bracket, as well as a 1200mm double looped flex cable, will increase the security of your bike.
It’s a tried-and-true U lock that’s stood up to some of the strongest blows and cutting devices.
Rubber Fittings on Mount Bracket: The mounting bracket has rubber fittings to keep it firmly attached to the bike. Sigtuna Gear lock contains a one-button lock release mechanism that lets you attach and disconnect the lock fast. The bracket can also be simply mounted in a variety of positions.
Protective Vinyl Coating: Cables have a tendency to scratch the paint, but not this one because it has a protective vinyl coating.
Sigtuna Gear lock features an anti-theft design thanks to the combination of a double lock system that will not break even if one side of the lock is penetrated. Furthermore, it is extremely difficult to pick up the disc cylinder.
Key Hole Cover: To keep dust, grime, and other debris out of the keyhole, it features a cover.
External causes from producing keyhole damage and shortening the lock’s lifespan.
What I like
You can lock large-framed bikes and even foldable bikes with the flex cable that comes with it.
The lock is huge, measuring 9.4 inches in length and 7 inches in width.
What I don’t like
The mounting bracket will not fit thin tubes and will move, which may be inconvenient. You can read the entire Sigtuna Gear lock review here.
Pros
- Easy to use and install on the bike
- Cutting and leverage attacks are not effective
- A mounting bracket with a one-button release is included
- You will receive a full refund if the lock does not fulfil your expectations (conditions apply)
- Your bike’s paint will not be harmed
Cons
- On a bike with narrow tubes, the lock is too slack on the bracket
5. Amazer Heavy Duty Combination – Budget-Friendly
Key Features:
- Superior durability
- A four-digit combination lock
- Lightweight at 1.8 pounds
- Zinc-aluminum alloy cylinder
- A dust cover
Amazer Heavy Duty Combination lock is a password-protected, keyless U lock that eliminates the need for keys to be kept track of.
The lock has a long lifespan and is simple to use.
This lock comes with a plethora of useful functions. It has a zinc coating and is quite durable. It’s also cost-effective.
Entire Thickness: It is meant to go a long way due to its total thickness (12mm shackle+3.85 PVC covering). The proportions are also reasonable (28.6 inches in length, 5.74 inches in width, and a crossbar thickness of 28.6mm). As a result, breaking the lock necessitates considerable effort.
It’s a four-digit coded password-protected lock that provides outstanding security.
The default password is 0000, which can be changed by hitting the reset button on the left crossbar. The shackle remains attached to the crossbar until the correct password is entered.
The dust cover protects the numeric combination. Amazer Heavy Duty Combination lock keeps dust and debris out of the lock, allowing it to last longer.
Bike Paint Protection: The lock’s PVC covering protects the bike’s paint from scratches.
What I like
The keyless function saves time and makes switching bikes simple by requiring only the password rather than the key.
What I don’t like
The lack of a mounting bracket makes riding the lock on the bike inconvenient.
Pros
- There is a 30-day money-back guarantee if there is a fault
- There are no keys required to unlock
- Affordable
- Your bike’s paint will not be harmed
- It’s little, weighing only 1.8 pounds
Cons
- There isn’t a mounting bracket
6. Kryptonite Kryptolok Series 2 Mini-7
Key Features:
- Steel shackle
- Lightweight at 2.8 pounds
- Duplicate keys available
- Moveable dust cover
If you live in a lower-risk area, then this low-cost security U lock may be handy. Kryptonite Kryptolok Series 2 Mini-7 has given it a security grade of 6 out of 10 because it is not meant for high-risk situations.
What I like
The great majority of u locks in this price range are far inferior. It protects your bike in a modest way.
What I don’t like
The mounting brackets are extremely flimsy. It does not hold the lock securely and can break if too much force is applied.
The endurance isn’t up to par. It can be broken with a hefty bolt cutter or by drilling into the side of the lock. Locks can deter burglars even if they aren’t very effective; thus, they should only be used in low-security areas or to give mental security.
Pros
- Two keys, as well as a key safe program, are included
- Affordable
- Your bike’s paint will not be harmed
- Paint is not scratched by the lock’s coating
Cons
- The quality of the mounting bracket is bad
- Cable has a short lifespan
7. Abus Mini Round Shackle – Best for Mountain Bikes
Key Features:
- Optimum security
- Lightweight
- Minimalistic design
- Protection for cylinders
- Corrosion-resistant
- Two bolts
Abus Mini Round Shackle is known for making high-quality bike accessories, and this U-lock is no exception. Despite being made of hardened steel, the Abus Mini Round Shackle lock is compact and light. There are also anti-theft technologies such as cylinder protection, a double-bolting shackle, and a protected locking mechanism.
Specifications of the Product
This Abus Mini Round Shackle lock is a great choice for mountain bike owners since it can keep your bike safe while being compact and lightweight. This is an important aspect for mountain bikers because many of them travel regularly and need a portable bike.
What I like
The Abus brand prioritizes security. Biker now has top-of-the-line premium cylinder protection, a double bolting shackle, and German-engineered 14mm hardened steel that can withstand bolt cutters and other forms of manipulation, thanks to years of research and development.
What I don’t like
Although the design is small and light for the material used, it may be difficult for certain mountain bikes to lock at attachment points such as bike racks due to the size. If you have a mountain bike with a larger frame, you should consider acquiring a larger U-lock.
Pros
- Lightweight
- Maximum security
- Portable
- With two chains, shackle
- Cylinder safeguarding
Cons
- This item does not include a frame mount
8. Kryptonite Evolution Series 4 Standard Heavy Duty Bicycle U-lock
Key Features:
- Innovative design
- Hardened crossbar in an oval shape
- Two deadbolts
- Movable dust cover
- The cylinder has a disc design on it
- New flexframe-U
The Kryptonite company has an excellent mountain bike range. The Kryptonite U-lock features a strong oval crossbar design, a double deadbolt, and a high-security disc-style cylinder, making it suitable for providing maximum security in high-risk circumstances.
Specifications of the Product
The Kryptonite’s unique security features combine to make it a good choice for bikers living in high-crime areas.
The bar, U-lock, and interior of this lock are all resistant to bolt cutters, leverage attacks, and twist attacks.
If you have a mountain bike and want to keep it safe in high-risk circumstances, consider the Kryptonite series U-lock.
What I like
Kryptonite U-lock is slightly heavier than the others, but it is a durable lock that can withstand a range of attacks.
Apart from the security provided by this U-lock, its key replacement program and anti-theft software can provide you peace of mind.
Furthermore, unlike other U-locks, mounting this lock is quite straightforward, allowing you to easily lock your mountain bike to a variety of connection points.
What I don’t like
This U-lock is heavy, as previously said, making it more difficult to transport while commuting or traveling. It is still transportable, despite its size and weight.
Pros
- Ensured security
- Program to prevent theft
- Replacement program
- Steel that is exceedingly hard and long-lasting
- The most effective security
Cons
- A little too hefty
9. ONGUARD Double-Team PITBULL U-lock and Cable
Key Features:
- Dual protection for all types of bicycles
- Double-coated braided steel cable
- X4P locking mechanism
- Tad lighter than the other ones
If you’re worried that a U-lock won’t be enough to keep thieves away from your bike, the ONGUARD Double-Team lock and cable combination is the way to go. This device is also advised for mountain bike riders who have difficulty mounting their bikes for additional versatility.
Specifications of the Product
The U-lock and chain lock on the ONGUARD set it apart from the competition. For bikers who want both locks, this option offers the best price while also providing security and durability.
What I like
This device provides dual protection by combining a U-lock with a cable lock. Both locks are constructed of high-quality materials. In high-risk regions, the ONGUARD U-lock and cable combo can protect your bike from prying, cutting, and jacking while still allowing you to mount your bike to bike racks or posts with ease.
What I don’t like
Despite the fact that this product can adequately preserve your mountain bike, it may not be the greatest option for cyclists that travel regularly or ride for fun. Because of its weight, the ONGUARD U-lock is difficult to carry for everyone. In addition, the lock as a whole is rather bulky and difficult to store or mount while riding.
Pros
- There are two layers of protection
- Outstanding safety
- The set includes five laser-cut keys
Cons
- It’s too huge for some cyclists
Best Bike U-Locks: Buying Guide
When looking for the best bike U-locks on the market, keep the following characteristics in mind:
Look for a U lock with two deadbolts. In this configuration, both ends of the shackle are securely fastened inside the disc cylinder. The advantage is that even if a burglar breaks one end of the lock, the lock will not come apart and will remain locked until the other end is broken as well.
Use a U lock with a thickness of at least 15mm instead of a thin steel shackle. The shackle thickness is the most important element of a lock. It’s tough to pull, pry, or break, and even the sharpest and most powerful bolt cutters can’t break it.
On the other hand, locks with a thin shackle are easily removed.
Weather Resistant: The weather in some areas can be rather severe. It’s probable that it’ll rain heavily or there’ll be a lot of dust storms. This is where corrosion or damage can occur.
The real problem is the keyhole, which readily gathers debris and dust, jamming the lock and even damaging it from the inside, making it impossible to open.
As a result, selecting a U lock with a PVC coating to prevent scratches and corrosion is essential. A keyhole dust cover is also handy since it protects the key passage from the elements.
Mounting Bracket: It can be inconvenient to use a lock that does not have a mounting bracket. Carrying is no longer necessary, thanks to the mounting bracket. So go for one with a sturdy and easy-to-install bracket.
The price of the U-type lock you select should be based on your budget. Using a $200 lock to secure a $200 bike is not a good idea. However, if you own a high-priced bike, you should not skimp on the price.
Consider investing in a lock that is covered by a warranty. If the bike is stolen, some people may even pay for it.
Conclusion
There you go. A list of best bike U-locks along with a buyer’s guide is given above. Because it includes a robust and thick shackle that resists bolt cutters and other cutting tools, Kryptonite New York Standard Heavy Duty is our top choice for a bike U lock.
A dual bolt lock mechanism is included, as well as a sturdy and smooth mounting bracket. Not to mention the fact that it has a security rating of ten out of ten.
Remember that today’s market includes a wide range of lock kinds. We’ve already put in the time and effort to create a couple of massive tutorials.
Here’s a link to our Best Folding Locks guide.
