There’s a specific, gut-wrenching feeling that every motorcycle or high-end bicycle owner knows. It’s that fleeting moment of doubt when you walk away from your prized possession, leaving it chained to a post in the urban jungle. You trust your lock, but in the back of your mind, a nagging voice whispers, “Is it enough?” This anxiety is the shadow that follows every proud owner. A motorcycle isn’t just a vehicle; it’s a passion, an investment of time, money, and emotion. Leaving it vulnerable feels like leaving a part of yourself exposed. The search for a security solution isn’t just about finding a piece of metal; it’s about buying peace of mind, the freedom to walk away and know that when you return, your ride will be exactly where you left it. This is the promise that security systems like the BIGLUFU Motorcycle Lock Chain 120cm Heavy Duty are built on, but as we discovered, not all promises are kept equally.
- HEFTY anSTRONG CUT RESISTANT: Our bike lock is made of unbreakable 3T manganese steel,10mm diameter square-linked chain, strong and tough, can withstand TOTALLY 6KN tension and 13KN shear force...
- SCRATCH-PROOF COVER and FRIENDLY SIZE: The chain lock is wrapped by a water-resistant nylon sleeve, which is scratch-proof and wear-resistant, protects chain from scratching your property.
- STOUT U LOCK and 4 ERGONOMIC KEYS: Our chain lock comes with 1 sturdy U lock made of 16mm hard zinc alloy shackle and thick PVC coating, strong resists cutting and leverage attacks, ensures your...
What to Demand from a Heavy-Duty Security Chain Before You Buy
A Bike Chain Lock is more than just an item; it’s a key solution for creating a formidable physical and psychological deterrent against theft. It’s the crucial link—literally—between your valuable asset and an immovable object. The primary benefit is its versatility; unlike rigid U-locks or disc locks, a long chain offers the flexibility to secure your vehicle’s frame and wheel to a wide variety of anchor points, from thick lampposts to awkwardly shaped railings. This adaptability is essential in unpredictable environments where perfect locking spots are a luxury. A heavy-duty chain communicates a clear message to would-be thieves: “This will be difficult, noisy, and time-consuming.” In the world of opportunistic crime, that is often enough to make them move on to an easier target.
The ideal customer for this type of product is someone facing a moderate security risk who needs flexibility. This includes urban motorcycle or scooter commuters, individuals securing expensive e-bikes, or homeowners looking to lock down generators, grills, or gates in a residential setting. It’s for the person who needs more reach than a U-lock can provide. However, it might not be the ultimate solution for those in extremely high-crime areas or for owners of exceptionally high-value, custom motorcycles who may require a multi-layered security approach with alarms and ground anchors. For those seeking maximum portability for a daily bicycle commute, the sheer weight of a heavy-duty chain can also be a significant drawback, making a lighter, high-quality U-lock a more practical alternative.
Before investing, consider these crucial points in detail:
- Dimensions & Space: The length and thickness of the chain are paramount. A longer chain, like the 120cm (4ft) length offered here, provides more options for securing your property to larger objects or even chaining multiple bikes together. However, always measure your intended use case. As some users have noted, actual length can sometimes vary slightly, so ensuring you have enough reach is critical. Chain thickness, measured in millimeters, is a direct indicator of its resistance to manual bolt cutters.
- Capacity/Performance: This refers to the lock system’s ability to resist attack. Look for the chain’s material composition and the lock’s shackle diameter. The BIGLUFU specifies a 10mm chain and a 16mm U-lock shackle, which on paper suggests a high resistance to cutting and leverage attacks. However, the performance of the lock core itself—how it stands up to picking or drilling—is just as important as the brute strength of the materials.
- Materials & Durability: Not all steel is created equal. Hardened or manganese steel alloys offer significantly more resistance to cutting than standard steel. The chain’s protective sleeve, typically nylon, is also crucial for preventing scratches on your bike’s paint and wheels. For the lock, pay close attention to the construction of the body; a solid steel body is always preferable to one with significant plastic components, which can be a critical weak point. You can see the full material specifications to better understand its construction.
- Ease of Use & Maintenance: A security system is useless if it’s too cumbersome to use regularly. Consider the weight of the system and how you’ll transport it. The lock mechanism should operate smoothly, and having multiple keys is a significant convenience. For long-term reliability, especially in wet climates, the lock cylinder will require periodic lubrication to prevent rust and seizure, a point underscored by several user experiences.
Choosing the right lock is a critical decision in protecting your investment. It’s about balancing security features, usability, and budget to find the perfect fit for your specific needs.
While the BIGLUFU Motorcycle Lock Chain 120cm Heavy Duty presents a compelling option, it’s always wise to see how it stacks up against the competition. For a broader look at all the top models, we highly recommend checking out our complete, in-depth guide:
- HEAVY-DUTY CHAIN: Made from 7mm manganese steel with four-sided links, this bike lock provides maximum resistance against cutting and leverage attacks
- High Security & Keyless Design: Say goodbye to the hassle of carrying keys and hello to keyless convenience. The advanced 5-digit combination lock offers unparalleled protection, with up to 100,000...
- HEAVY-DUTY CHAIN: Made from 7mm hardened steel with four-sided links, this bike lock provides maximum resistance against cutting and leverage attacks
First Impressions: Unboxing the BIGLUFU and its Key Features
Pulling the BIGLUFU Motorcycle Lock Chain 120cm Heavy Duty from its packaging, the first thing we noticed was the chain itself. It has a satisfying heft and the 10mm square links feel substantial in hand. The colorful, woven nylon sleeve is tightly fitted and appears robust, a feature we immediately appreciated for its ability to protect a bike’s delicate paintwork and expensive rims from scratches. The 4-foot length felt generous, promising the flexibility to secure our test motorcycle to a variety of less-than-ideal anchor points. In these initial moments, the product feels like it’s living up to its “heavy-duty” name. It gives off an air of serious deterrence.
However, this positive impression faltered the moment we picked up the included U-lock. While the 16mm shackle looks thick, the lock body felt disconcertingly light. Tapping on its casing revealed that a significant portion is made of plastic, not the solid block of steel we would expect from a high-security lock. This contrast between the brawny chain and the lightweight lock was immediate and stark. It felt like pairing a bank vault door with a standard bedroom doorknob. This initial hands-on experience planted a seed of doubt and became the central focus of our in-depth testing, as the strength of any security system is only as good as its weakest link.
Advantages
- The 10mm manganese steel chain feels substantial and acts as a strong visual deterrent.
- A generous 120cm (4ft) length provides excellent versatility for locking to various objects.
- The protective nylon sleeve is well-made and effectively prevents scratches on paint and wheels.
- Comes with four keys, which is a convenient bonus over the standard two or three.
Limitations
- The included U-lock is the system’s critical flaw, with a cheap-feeling, plastic-heavy construction.
- The lock core is a simple wafer lock, reportedly vulnerable to being forced open with basic tools.
Performance Under Pressure: A Closer Look at the BIGLUFU Lock System
A lock’s true worth is revealed not on the shelf, but on the street. It must withstand not only the dedicated attacks of thieves but also the rigors of daily use and exposure to the elements. We put the BIGLUFU Motorcycle Lock Chain 120cm Heavy Duty through its paces, analyzing each component to understand where it excels and, more importantly, where it fails. Our findings paint a picture of a product with a strong heart but a tragically vulnerable Achilles’ heel.
The Chain: A Formidable First Line of Defense
Let’s start with the star of the show: the chain. BIGLUFU claims it’s constructed from 10mm square-linked 3T manganese steel, and in our hands-on evaluation, it certainly feels the part. The weight alone is a psychological deterrent. A potential thief seeing this thick, colorful chain wrapped around a motorcycle frame and wheel will immediately recognize that this isn’t a job for pocket-sized cable cutters. Defeating it would require a large pair of bolt cutters and a significant amount of force and time, creating noise and drawing attention.
The square-link design is a notable feature. Unlike rounded links, square links don’t allow a cutter’s jaws to get a clean, perpendicular bite, forcing the tool to work harder and at an angle. During our testing, we found the 120cm length to be a major practical advantage. It was more than enough to loop through the rear wheel, the frame, and around a thick concrete pillar in our parking garage—a feat impossible with most standard U-locks. The protective nylon sleeve is another highlight. As one user aptly put it, the cover is “perfect for not scratching the rims.” It’s a thoughtful detail that owners of bikes with expensive wheels will appreciate, and it held up well to being dragged on concrete without tearing.
However, we must temper this praise with a dose of realism gleaned from user feedback. There are credible reports of this chain being defeated by determined thieves with bolt cutters. This tells us that while the chain is a significant step up from any cable lock and will deter amateurs, it may not withstand a sustained, professional assault. It occupies a middle ground: strong enough for many situations, but not invincible. For those who understand its position in the security hierarchy, this heavy-duty chain offers a solid foundation for a security setup.
The U-Lock: The System’s Achilles’ Heel
If the chain is the system’s foundation, the U-lock is its catastrophic flaw. This is where the “heavy-duty” moniker falls apart completely. While the product specs boast a 16mm shackle, the reality of the lock body is deeply disappointing and, frankly, alarming. Our initial impression of its lightweight, plastic-heavy construction was confirmed by numerous user reports that paint a damning picture. One user stated the lock body is “mostly plastic,” and another described it as “cheap.” We concur with this assessment; it feels more like a toy than a component meant to secure a multi-thousand-dollar motorcycle.
The most critical failure, however, lies in the lock core itself. Multiple users identified it as a “cheap double wafer lock,” and one individual made a shocking discovery: “I just put a screwdriver in and twisted and the lock opened.” We cannot overstate how serious this vulnerability is. A lock that can be defeated in seconds with a common hand tool provides a false sense of security that is more dangerous than no lock at all. It renders the impressive strength of the chain completely irrelevant. The thief simply bypasses the chain and attacks the lock—the path of least resistance.
Beyond its glaring security vulnerabilities, the lock also suffers from poor durability. We found multiple accounts of the lock seizing up due to rust after only a short period of use. One user shared a harrowing story of the lock failing completely, requiring a £150 locksmith bill to cut it off their bike. When they contacted the seller, they were unhelpfully told they must not have used the lock “correctly.” This is unacceptable. A security product, especially one used outdoors, must be resilient to the elements. The combination of a highly vulnerable lock core and poor weather resistance makes the included U-lock not just a weak link, but a liability. It’s a component that we believe should be discarded upon receipt and replaced with a reputable, high-quality padlock or U-lock. To see the lock design for yourself is to understand the concerns we and other users share.
Everyday Usability and Practical Considerations
Setting aside the critical lock failure, how does the BIGLUFU Motorcycle Lock Chain 120cm Heavy Duty perform as a daily tool? Its weight is the first thing you’ll notice. At nearly 2 pounds, it’s not something you’d want to carry in a backpack for a bicycle commute. It’s best suited for motorcycle use, where it can be stored in a saddlebag or top case, or for stationary use, like securing a gate or generator.
When the lock mechanism isn’t seized, it functions, but not with the satisfying precision of a high-end lock. We echo the sentiment of a user who found inserting the key a bit “tedious,” with some “annoying play” required to get it to open. It lacks a positive, crisp action. On the plus side, the inclusion of four keys is a genuine convenience, providing plenty of spares for multiple users or to stash in different locations. The flexibility of the chain remains its strongest practical asset. We found it useful for a variety of tasks beyond vehicles, from securing patio furniture together on a windy day to locking a ladder to a fence post. Users have also reported creative applications, such as one owner who used it to lock their car’s steering wheel to the gearshift, showcasing its versatility. This adaptability is a key selling point, provided the user is aware of the lock’s limitations.
What Other Users Are Saying
Synthesizing the broad spectrum of user feedback reveals a remarkably consistent story. The consensus is a stark divide in the product’s quality: the chain is generally seen as adequate to good, while the lock is almost universally condemned as the weak point that compromises the entire system. This isn’t a case of mixed opinions; it’s a clear pattern of a specific component failure.
On the positive side, many users, like the one who said the “Chain was solid and the fabric covering is perfect for not scratching the rims,” appreciate the core qualities of the chain itself. Its heft, length, and protective sleeve are frequently praised as being well-suited for securing items like scooters or for use in lower-risk environments. Another user simply stated it was “perfect” for securing their 50cc scooter.
However, the negative feedback is specific and severe, focusing squarely on the lock. One user’s experience is a stark warning: “Be cautious, I was using this chain until I noticed a thief cut through it with bolt cutters.” Even more alarming are the reports about the lock’s integrity. As one detailed review noted, the product photos are misleading, and what arrives is a “cheap double wafer lock” that they were able to open with a screwdriver. Another user’s experience was financially painful: “the lock has already rusted and seized up on me, causing me to have to spend £150 on a locksmith to cut it off.” This feedback is critical because it validates our own findings that the lock is not fit for purpose in any high-security application.
How Does the BIGLUFU Compare to the Competition?
In the world of security, you often get what you pay for. The BIGLUFU Motorcycle Lock Chain 120cm Heavy Duty competes in a crowded market, and understanding its place requires comparing it to established alternatives. While it offers an attractive length and chain thickness for its price, its compromised lock puts it at a serious disadvantage against more reputable brands.
1. Kryptonite Evolution 1090 Bike Chain Lock 3 Feet
- New patent-pending pin-less link design secures chain to hardened deadbolt, offers no "weak" link in the chain due to the extensive holding power of the link itself against attacks
- 10mm six-sided chain links made of 3t manganese steel
- High security disc-style cylinder is pick and drill resistant; resists most common hand tools
The Kryptonite Evolution 1090 is a step up in nearly every regard. While its chain is also 10mm thick, it’s made by a brand renowned for its security engineering and carries a “Sold Secure Gold” rating, an independent certification of its resistance to attack. The most significant difference is the integrated lock head and high-security disc-style cylinder, which is far more resistant to picking and drilling than the BIGLUFU’s wafer lock. Though it’s shorter at 3 feet, the Kryptonite is the superior choice for anyone prioritizing verified, tested security over maximum length. It’s for the user who is willing to invest more for the peace of mind that comes with a trusted brand and a certified security rating.
2. ABUS 2′ Hardened Steel Security Chain
- High Security Chain: This 14lb security chain offers optimum security against all types of aggressive attacks; Made of hardened steel with a special anti corrosion coating that makes them ideal for...
- Anti Theft Design: This chain features square shaped links, much more effective against attacks with tools; The chains also feature a nylon sleeve to prevent scratches and damage to paint work and...
- Padlocks for Any Application: Discover the variety of our padlocks, from heavy duty Granit padlocks and disc locks to brass, steel and aluminum models, to resettable combination, rekeyable and keyed...
The ABUS 10KS chain presents an interesting alternative. This product is just the chain itself, sold without a lock. This “bring your own lock” approach directly addresses the BIGLUFU’s primary weakness. A user could purchase this high-quality, German-engineered hardened steel chain and pair it with a top-tier padlock of their choosing, creating a security system with no weak links. While this 2-foot length is much shorter, ABUS offers various lengths. This option is ideal for the discerning user who understands security principles and wants to build a customized, uncompromised solution by combining best-in-class components.
3. Kryptonite Keeper 785 Bike Chain Lock
- HEAVY-DUTY CHAIN: Made from 7mm manganese steel with four-sided links, this bike lock provides maximum resistance against cutting and leverage attacks
- PATENTED LOCKING SYSTEM: Features a high-security disc-style cylinder, resistant to picking and drilling, and a patented end link design that securely connects the chain to a hardened deadbolt,...
- PROTECTIVE FEATURES: Durable rubber coating around helps prevent scratching and wear and tear on your bike. Durable WEATHER-RESISTANT nylon sleeve prevents scratches
The Kryptonite Keeper 785 is a more direct budget competitor. It features a thinner 7mm four-sided chain, making it less resistant to large bolt cutters than the BIGLUFU’s 10mm chain. However, it benefits from Kryptonite’s integrated locking mechanism with a disc-style cylinder, which is more reliable and secure. This presents a clear trade-off: would you prefer a thicker chain with a critically flawed lock (BIGLUFU) or a slightly thinner chain with a proven, reliable lock from a top brand (Kryptonite Keeper)? For most users concerned about real-world theft scenarios, where locks are often picked or forced, the Keeper 785 is likely the smarter, more balanced choice for securing a bicycle or scooter.
The Final Word: Is the BIGLUFU Lock Chain a Worthwhile Investment?
After extensive hands-on testing and analysis of real-world user feedback, our verdict on the BIGLUFU Motorcycle Lock Chain 120cm Heavy Duty is a conditional one. This product is a study in contrasts. The chain component offers impressive heft, a versatile length, and thoughtful features like the protective sleeve, making it a solid deterrent for low-to-moderate risk situations. It feels like a good value, providing a lot of heavy steel for the money.
However, this entire package is unforgivably let down by the included U-lock. Its cheap construction, plastic components, and critically vulnerable wafer lock mechanism render it unsuitable for securing anything of significant value. It creates a false sense of security that could lead to a devastating loss.
Therefore, we can only recommend this product with a major caveat: buy it for the chain, but immediately discard and replace the lock with a reputable, high-security padlock or U-lock. If you view it as a standalone 120cm security chain that happens to come with a throwaway lock, it can be a cost-effective part of a larger security strategy. For anyone looking for a complete, reliable, out-of-the-box solution to protect a valuable motorcycle or e-bike, we strongly advise looking elsewhere. If you understand this compromise and want to invest in a versatile chain for lower-risk needs, you can check the latest price and availability online.
Last update on 2025-11-26 / Affiliate links / Images from Amazon Product Advertising API