Sturdy steel construction that resists cutting. 4-foot bike cable included. Lightweight, yet strong. 2 sets of keys included. Suitable for use on bikes of all sizes. Easy to use once it's set up.
There have been a few complaints about the durability of the mounting bracket.
Comes in 3 colors. Can purchase with or without bike cable. 4-number combination lock. Easy to install and set the combination. Mounting bracket included. Sturdy construction.
This is a smaller lock and the cable is shorter than some were expecting.
The multi-function expandable locking area makes this lock useful for so much more than just bicycles. Motorcycles, baby carriages, and a host of other items can fit within the specs of this solid and secure lock.
Some people find that the key mechanism is difficult to operate at any angle other than straight forward.
As the name would suggest, this lock opens and closes based on the fingerprint you program into its memory. This is the absolute height of security, wherein you can guarantee no one gains access to your property that doesn't warrant it.
The lock is rechargeable, which can pose challenges if you don't have the time, or the will, to make sure that the lock is fully charged.
4-digit combination lock. Dust cover included to extend cylinder life. Easy to set and change the combination. Hide numbers when not in use. Well-constructed without being too heavy.
This lock is on the smaller side, so it's not the right choice if you need a larger lock.
We purchase every product we review with our own funds — we never accept anything from product manufacturers.
With more and more cities making dedicated bike lanes for transportation purposes, bike travel is becoming a part of everyday city life. As such, people need to have a secure way to lock up their bike when not in use. That’s where a U lock can come in handy.
U locks are extremely secure locks for your bicycle. They are called U locks because they have a solid U-shaped piece of metal that locks on both ends into a solid metal rod. They can be used either to lock a bike frame to its own tire or to lock the frame of the bike around a bike rack or other solid structure. Some come with handy features as well, including weatherproof keyholes, additional cable locks (to keep your bike extra secure), and a mounting bracket to attach the U lock to your bike.
Although U locks perform the same function as a chain lock, they have their own set of advantages and disadvantages. Read the following shopping guide and you can determine for yourself if a U lock is right for you. If it is, check out our top picks.
U locks are relatively basic pieces of equipment. However, there are a number of factors to consider when choosing which one you want to purchase. First of all, you will need to decide how you plan to use it. If you only need it to lock the bike to its own wheel, then you won’t have the same requirements as someone who wants to lock the bike to a rack or other structure. Also, how you lock and unlock your bike will have a major bearing on the type of lock you will choose. Consider the following factors when making your final decision on which U lock is the best for your needs:
Some U locks have a key-lock system, while others use a combination lock. Whether you choose one or the other depends largely on your personal preference and what you find more convenient. A key lock is more convenient for those who want to unlock in a hurry, while a combination lock is more convenient for someone who may be prone to losing their keys.
If your U lock will be exposed to the elements every single day, you’ll want to think about what type of conditions it will be facing. If you live in a high-precipitation zone, then the lock could be susceptible to rust damage. For both key and combination locks, rust can do severe damage to the exterior and interior mechanical parts.
U locks by nature are not flexible. In fact, they can be downright heavy and cumbersome. If you want a U lock that doesn’t weigh a ton and one that is small enough for you to carry around in your bag, you’ll need to do research and check the specs of each lock. Look for one that has small dimensions and is made of especially lightweight material, such as aluminum.
Most lock companies will offer the ability to get a replacement key if yours is lost. You must contact them directly, though, and provide whatever information they request in order to do so.
The most important thing to remember when reviewing available features for a U lock is that the primary function of any lock is to secure your valuables. Additional features on U locks that merely serve as a gimmick may not be worth the extra cost on the price tag. Conversely, any features offered that make the lock more secure, and less likely to be broken, are features worth considering.
If you don’t know where to put your U lock when riding your bike, then a mounting bracket is perfect for you. Some U locks come with mounting brackets that will strap to your bicycle, allowing you to mount your U lock on your bike while in transit.
The worst thing that can happen upon arriving at your destination is to realize that you have no way of locking your bike because you forgot your lock at home. A mounting bracket helps avoid this common problem.
Many people think that U locks work best when used in tandem with cable locks. That’s why some U locks can be purchased with additional cable locks to supplement them. If you think you want the extra security and extra adaptability of a cable lock to work along with your U lock, then consider purchasing one of these combination kits.
Rusted keyholes can cause major problems on any bike lock. If you want to make sure that you’re not locked out of your own U lock due to rust and weathering, then consider purchasing a U lock that has a weatherproof keyhole.
Buying a U lock with a mounting bracket is a convenient way to always know where your U lock is when not using it.
It’s a good idea to keep the combination of your U lock in two separate locations just in case one copy gets lost.
Inexpensive: The least expensive U locks on the market will cost you between $5 and $50. These U locks will offer the most basic features and designs. Some of them will come with additional cables as well.
Mid-range: For $50 to $100, you’ll find U locks that will likely have additional features such as both key and combination locks and a buckle jacket to protect your bike from contact scratches.
Expensive: The highest priced U locks on the market range between $100 and $200. They are all made from high-stress steel and feature more sophisticated locking systems, which are less likely to be broken than their cheap counterparts.
Never give anyone who you don’t know the combination to your bike lock or a copy of your key.
Remember that using a U lock to simply lock the tire to the frame of the bike will not guarantee that the whole bike is safe from theft. It only ensures that the bike is unrideable while locked.
Never lock your bike to structures that you don’t have permission to use. This is a quick way to lose your bicycle.
Always wear a helmet when biking. Head injuries are no laughing matter.
Follow all of your local rules in connection with biking. Most cities now have dedicated bike lanes and laws that govern rider conduct.
Take care when connecting your U lock to your bicycle not to scratch the surface. Because locks are made of high-stress steel they can scratch a bike’s surface easily.
U locks are products which have far more diversity than some may realize. Due to this fact, we were hard-pressed to narrow down our list to just five of the best models. If you don’t find one you like above, consider looking into these U locks as well. An inexpensive choice that gets the job done is the Titanker U Lock Bike Lock. Its 16-millimeter heavy-duty shackle and cylinder is made of solid zinc alloy that will foil any would-be thief. A good mid-range choice is the ABUS U 420. Its temper-hardened steel will neither bend nor break under the toughest of conditions. On the expensive side of the market is the ABUS Granit XPlus U Lock. In addition to all of the high-tech safety features on this lock, it comes with a convenient lighted key.
Q. Isn’t my bike just as safe with a standard chain lock than with a U lock?
A. No, U locks offer an added level of security for your bike, because they are made from hardened steel, which is far more difficult to break than a basic metal chain.
Q. Should I also use a cable lock in addition to my U lock?
A. Maybe. An added lock, no matter what type it is, adds a level of security because it extends the amount of time that a would-be thief would need to spend to steal your property.
Q. Are less expensive U locks less secure?
A. Not necessarily. Research the specific specs of every U lock you are considering. Sometimes a low-cost option is the best one for you.
Q. Can I use my U lock for items other than my bicycle?
A. Yes. A U lock is designed to secure any item which has a gap that can be attached to another fixed item. The only limit to what you can secure with a U lock is the dimensions of said item.
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