KOHLBURG Security Chain Lock [Sold Secure Gold] – 4ft Long Bike Chain with 4 Keys – Heavy Duty Bike Lock 0.33" – for Bicycle Ebike & Motorcycle – Motorbike & Scooter Anti Theft
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Availability:
In Stock.
Arrives
Monday, Aug 24
Features
- SECURITY FIRST, NO EXCUSE GIMMICKS This chain lock of type Helsinki is designed to protect high-quality bikes and motorbikes - no more and no less. Hence, this lock is no lifestyle accessory with exciting gimmicks. We prioritize security by using an especially strong Titanium steel and a particularly safe cylinder that matches car security standards. We combine years of experience in the field of bike security with our high German security standards. For details, please see below.
- SOLID STEEL INSTEAD OF LIGHT STEEL In contrast to many other chain locks who are advertised as lightweight, we do not use light steel with reduced safety. We believe there is simply no shortcut for security. That is why our lock is made of solid hardened steel and, thus, is especially secure against bolt cutters & metal saws. The price of this high anti-theft focus is a heavy lock weight of 5.5 lbs. Greatly suited for motorcycle scooter moped ebike pedelec electric bike & bike trailer.
- EXTRA-LONG LOCK The longer the lock, the more convenient and secure the bicycle can be locked. This bike chain lock has a spacious total length of 4 feet / 49 inch / 125 cm. This length is important to securely lock both your bike frame AND the front wheel to a fixed object. Or to secure several bikes at once.
- HIGH SECURITY CHAIN The lock chain provides a high level of security against bolt cutters & hacksaws due to the 0.33" / 8.3 mm strong 4-edge links. Additionally, the lockhead offers an anti-lock-picking cylinder. To also protect your bikes varnish, the chain is coated with a soft & robust sleeve. The lock comes with 4 keys.
- BETTER MASSIVE THAN SORRY The very long & massive lock offers a convenient balance between security and weight. On the one hand, locks with chain diameter of 0.25" or less are much lighter, but hardly offer a reliable protection. On the other hand, this chain lock is highly secure, but please consider the rather high weight of 5.5 lbs, and only buy this lock if the weight is acceptable for you. Please keep in mind, as we like to say: Better massive than sorry.
Brand: KOHLBURG
Special Feature: Extra-Long, Heavy Duty, Safe Cylinder with 4 keys, Specially Hardened Steel, Strong 4-Edge Links
Lock Type: High security lock
Item dimensions L x W x H: 49.21 x 1.57 x 1.57 inches
Material: Titanium Alloy Steel
Brand Name: KOHLBURG
Recommended Uses For Product: Security
Number of Pieces: 1
Included Components: Chain lock, soft & robust sleeve, 4 keys
Model Number: Helsinki
Model Name: Model Helsinki
Manufacturer Warranty Description: According to legal requirements
Manufacturer: Stahlwart
Unit Count: 1.0 Count
Manufacturer Part Number: Helsinki
Additional Features: Extra-Long, Heavy Duty, Safe Cylinder with 4 keys, Specially Hardened Steel, Strong 4-Edge Links
Lock Type: High security lock
Controller Type: Hand Control
Control Method: Touch
Smart Home Compatibility: Not Smart Home Compatible
Style Name: Complies With German Security Standards
Color: Black
Shape: Round
Material Type: Titanium Alloy Steel
Finish Types: Heat treatment
Item Dimensions: 49.21 x 1.57 x 1.57 inches
Item Weight: 2.5 Kilograms
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Monday, Aug 24
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
This bike lock is very good! As somebody who's new to the whole bike world, finding a lock and what would prevent theft was pretty difficult. One thing to understand if you're in the same boat I was, don't buy cheap locks. Don't buy weak locks either! Chain locks are probably one of the best you can get, unless you plan on getting those anti-angle grinder locks that cost easily half the price of your bike, these heavy-duty chain locks work very well! It's less about how easy it is to break into, but rather how good of a deterrent it can be. When a thief is carrying around some bolt cutters, he's going to be looking for the easiest lock to cut through. He won't spend 4+ minutes gnawing away at your 0.33" chain lock just to get your bike, especially at the risk of getting the police called on him. If you live in a busy city like Chicago, New York, or London, you're definitely gonna need some more serious security. For me, this lock is perfect. I use my bike to commute around my city. I live in a populated area that has a decent amount of crime, just outside of Detroit, sort of known for theft. I leave my bike outside the gym (nobody wants to steal a bike from a gym, let's be honest) for about an hour, and it's completely fine. I'll go shopping at my local grocery store for about 15 minutes and it's completely fine. If you're in a similar situation to me, a city (decently small, but larger than 50,000 people) and has a reputation for theft, then this is a totally perfect bike. BUT! By no means is this secure enough to use to leave outdoors for more than 3 hours, especially overnight. In that time, any guy can run back home, grab his angle grinder and a few blades, and get through this lock in probably 3-4 minutes. If you absolutely NEED an overnight lock, I suggest getting some that are made out of anti-angle grinder materials. They'll run you $250+, but will make it worth your while, as it'll gnaw away at the perp's saw blade before it'll gnaw away at the lock itself. Either this, or you can get one that plays a loud alarm when moved. Now, one of my only complaints about the lock is the plastic housing on it. The part that holds the locking mechanism is a cheap sort of plastic that will chip away every time that it hits the pavement. And, if you're clumsy like I am, you're bound to drop this thing on pavement hundreds of times. Even just dragging it against the pavement is going to make it look like it escaped a tiger's den! This isn't that big of a deal as you can just be more careful with it, and so far it hasn't brought any issues as far as I'm aware.
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Reviewed in the United States on September 11, 2024 by Dylan
Better quality than expected for 1/2 the price of the leading brand. It's nice and long, sturdy, keys work easily. Note that this is a bulky chain but that's why you are buying it. I trust my bike when I need to walk away and out of sight. That is all I need to say.
Reviewed in the United States on January 6, 2026 by Mindy Jordan
Great for securing your bike with a well made key and lock which is easy to operate and lock speedily. The chain inside a nylon sleeve hasnt failed me yet. and surely will deter most who would try to gank your ride. :)
Reviewed in the United States on April 12, 2026 by Ryan E.
Great customer service. Updated my rating. I unfortunately received a lock that would not unlock after very little use. We tried every key and possible way to unlock it -- but customer service did reach out almost immediately and offered to replace it. Thank you. We purchased a different brand. It was just a bit scary that if I got to my destination and it wouldn't unlock - how would I get home as well as cut the lock off. I will give the lock chain 5 stars. It was heavy duty and will most likely deter any thief. Good length solid chain when the actual lock worked.
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Reviewed in the United States on June 24, 2025 by Amazon Customer
This product is one of the better chain locks out there, and there is a good amount of length so that you can attach it to most things. The only downside is that it is a bit heavy, although that's probably due to the strength and quality of the chain. I've watched videos of people cutting through this and it takes several minutes and also a replacement blade to do so, as the first one would become dull trying to cut through it. Therefore this lock would make it exceedingly difficult for any thief to get through, especially in a public place where there are other people around... Overall this one get's the job done!
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Reviewed in the United States on December 9, 2024 by Caden
As others have mentioned, this is a hefty lock! It’s heavy and pricey and the locking mechanism doesn’t always turn without some wiggling, jiggling, cajoling, and occasionally threats. I never struggle to unlock it, but the rubber creeps up the chain section and makes getting it locked the very last straw if you happen to be running late. That said, I very much still have the bike for which I use this lock and I have always been able to find places to park it because the lock is so versatile. Bike racks, trees, pipes, sign posts, hub cap spokes, a sleeping camel - this chain can wrap around just about anything if it stays stationary long enough and still have your bike waiting there for you when you get back.
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Reviewed in the United States on February 24, 2024 by Malia Lewis
I want to love this bike chain. My lock keeps seizing which worries me it’s going to get stuck on the bike one of these times. I bought 2 and my other one is fine. I’m going to contact kohlburg to see if they’ll help me out regarding the defective chain and may end up adjusting review.
Reviewed in the United States on May 16, 2026 by Clare Romanauskas
Excellent chain lock. Has great length for single, or even two e-bikes, it absolutely has some thick links and seems really solid and feels it weight-wise
Reviewed in the United States on March 15, 2026 by Lenny