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Massive = Safe // Very Massive = Very Safe
The most important security features of a lock are its strength (i.e. chain thickness) and material (i.e. hardness of chain). In general: the more massive, the more secure. This means that the strength of the chain is an important security feature of a lock. With its 13 mm thick chain and a 16 mm strong lock shackle, the Alcatraz chain lock offers maximum security – approved by Sold Secure with the highest security level DIAMOND.
Large chain length for easy & secure locking
The longer a lock, the easier is the locking to a fixed object. Thus, also the length of the chain is an important security feature. The KOHLBURG lock has a very flexible length of 83” / 210 cm (200 cm chain + 6 cm chain ring + 4 cm padlock), which allows hassle-free locking even to very wide objects like street lamps or trees.
Extremely hard steel
The chain and the lock shackle are made of extra-hardened Maganese-Chromium steel. Thus, both chain and padlock offer a very high level of protection. In addition, to protect against lock-picking and drilling, a multi-disc lock cylinder + anti-drilling plate are integrated inside the padlock.
Security has its weight – Or as we like to say: better massive than sorry
No compromises on safety. For maximum protection, the most important thing is massiveness - there is simply no shortcut. Thus, as a high security lock, the chain lock has a massive weight of 8.1 kg / 18 lbs. This weight is no problem for motorized two-wheelers, but it can be a challenge to carry along with bicycles. If you want to use the lock for a bicycle, we recommend to store the lock at a fixed place (lamppost in front of the house, bicycle stand at the office, ...).
The advantages of the KOHLBURG massive chain lock type Alcatraz at a glance:
- Sold Secure Level DIAMOND - approved security
- 0.5” / 13 mm strong chain & 0.6” / 14 mm strong lock shackle
- 7’ / 210 cm long (200 cm chain + 6 cm chain ring + 4 cm padlock)
- 18 lbs / 8.1 kg weight - massive safety & heavy weight
- Multi-disc cylinder - essential protection against lock-picking
- Extremely hard Manganese-Chromium steel - important against theft & thieves
- Closable dust cap - protects the cylinder from moisture, dust & dirt
- Supplied with 4 keys
- The padlock without chain can also be used as a brake disc lock
- For motorcycles & mopeds, and for the stationary protection of bicycles
Bruce
Reviewed in the United Kingdom on February 12, 2025
Excellent the thicker the better
Max S.
Reviewed in Germany on January 6, 2025
Das KOHLBURG Alcatraz Motorradschloss ist absolut erstklassig! Mit seinen 8 kg und 210 cm Länge bietet es massiven Schutz, der Vertrauen schafft. Ich nutze es seit über einem Jahr täglich – bei Regen, Schnee und Sonne – und es hat mich nie im Stich gelassen.Die Verarbeitung ist herausragend: Kein Rost, keine Schwächen, und die Mechanik funktioniert immer noch wie am ersten Tag. Das Gewicht mag abschreckend wirken, aber für die Sicherheit meines Motorrads nehme ich das gerne in Kauf. Für mich das beste Schloss auf dem Markt, das sich den vollen Schutz versprochenen 5 Sterne redlich verdient hat! ⭐⭐⭐⭐⭐
Bobette N.
Reviewed in the United States on August 7, 2024
I thought I had a heavy-duty chain and lock, but this is substantially heavier. Lock seems to be high quality. I bought the 7-foot length but it's a bit shorter than I expected, so if you are not sure if the length will be enough, good to size up.
Kunde
Reviewed in Germany on August 26, 2024
Habe mir dieses Schloss nach einem versuchten Diebstahl gekauft, um sicherer zu sein.Und Na ja, es sieht und fühlt sich extrem wertig an und hat zudem auch noch ordentlich Gewicht.Sollte dieses Schloss potenzielle Diebe nicht abschrecken, wird es keines tun.
AK
Reviewed in the United States on June 3, 2024
Great product and excellent customer service. Will buy it again.
Mark Boorman
Reviewed in the United Kingdom on December 1, 2024
I love the solidity of the lock and the chain.
Clictof
Reviewed in France on April 18, 2024
Je recherchais une chaîne pour attacher divers objets dans un local. La chaîne Kohburg répond parfaitement à mon attente. Elle saura géner et fortement ralentir des personnes mal intentionnées.
Linda G. Biggs
Reviewed in the United States on August 12, 2023
It's very heavy. It's very very sturdy. Just remember it's 18 lb. So if you're going to use it on a bike, not a motorcycle or a scooter or an electric bike. It's perfect but it's very heavy. It's 18 lb. It's very heavy.
William A
Reviewed in the United States on July 20, 2023
This is a monster and because of that it's a massive visual deterrent. I'm sure the chain could be cut with a grinder, but it would probably take more time than any thief would want to invest. The lock is even larger in diameter which takes bolt cutters out of the mix, the lock mechanism is a disc design and set deep in the lock body. Hopefully all that will keep the criminals at bay.
J Johnson
Reviewed in the United States on May 17, 2023
Super fast delivery. Ordered in the morning, arrived by the afternoon.A bit shorter than description, but close.High quality, heavy duty.
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