900 Bike Chain Lock

€ 29.98

Designed for protecting your bike during long stops.

More details
SKU: S40 (1319916)
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Product benefits
  1. Theft resistant
    Theft resistant
    Security level rating: 8 out of 10.High-security lock
  2. Volume
    Usable length: 90 cm. Ideal for securing frame and wheel to a fixed object.
  3. Lightweight
    Weight: 2.3 kg.
Product feature
  1. Safety
    Contrary to what many people may think, no lock is fully tamper proof. A bike lock is there to make stealing the bike more complicated, to delay the thief and therefore act as a deterrent. A good lock has an anti-picking lock mechanism and is made out of materials requiring the use of specific tools, making theft more difficult.
  2. Security rating
    The security rating helps you choose the lock that is most suited to your use. To accomplish this, B'Twin defined a test protocol jointly with an independent laboratory, CNPP, based on real-life theft techniques. This unique protocol allows each lock to be given a comparable rating indicating how resistant it is to theft. This rating ranges from 0 (least secure) to 10 (most secure).
  3. Main section
    Links made of hardened steel (65 HRC), one of the highest strength levels available for bike locks. Guaranteed resistance to hacksaws and hammers. Covered in fabric to keep it from scratching the bike frame.
  4. Lock
    Reinforced lock mechanism. Hundreds of different keys to limit the risk of theft. Comes with 2 numbered keys.
Product testing
  1. Composition
    Structure : 100.0% Steel
  2. Product catchline
    Highly-resistant, high-security bike lock, perfect for securing the frame and front wheel.
Product reviews
3.8 / 5
10 reviews
11 users recommend this product
Write a review
  • Nice lock, can I get additonal keys?

    Adam (United Kingdom)
    Used for 3 to 6 months

    I have used the lock for a few months now, works great.

    I've lost one of the keys so I now have only 1 left. Is it possible to get a replacement set of keys to match the lock? I'm worried about losing this one and not being able to get the lock off. Bike locks typically come with 3 keys,

    It says in the description that the keys are numbered but htis doesn't appear to be the case, can you confirm this please?

  • Bike locked forever

    Vincent (United Kingdom)
    Used for 1 week or less
    Impossible to unlock my bike... must be an indoor lock as it rusted really quickly. Bike being chained for weeks now. Tryied all sorts of oil impossible to open it.... if anyone at decathlon reads this and has a solutioon i d appreciate.
    Response of the brand
    Dear sir,
    I can confirm that this is a lock designed for outdoor use. I have used the very same one personally for nearly three years outside. Every few months I apply some spray grease in the lock (not WD40 etc...) but one of the most common causes of locks jamming up is grit and grime. Keeping the lock mechanism off the ground for as long as possible is a good tip.
    Realistically in your case, the only way will be to saw or cut through the chain with a very large bolt cuter or axle grinding machine as this lock is very strong.
    Peter Lazarus, National Cycling Manager, DECATHLON
  • Not enough to stop theft

    Oliver (United Kingdom)
    Used for More than 1 year
    I had great faith in this lock, but have just had my bike stolen with this securing it. It appears a bolt cutter can cut through the metal links.
    Response of the brand
    I'm very sorry to read that a thief stole your bike. It is terrible that this has happened and from my unfortunate personal experience, I empathise completely. This strong chain lock deters many would be thieves, particularly ones of the opportunistic variety. However it is also true to say that some professional thieves carry large bolt cutters and other equipment and given enough time can break through most bike locks. The hardened steel on the links is graded at 65 HRC meaning it is very strong indeed which would have slowed down the thieves considerably.
    Peter Lazarus, National Cycling Manager, DECATHLON
  • chain very good, padlock not great

    jamie (United Kingdom)
    Used for More than 1 year
    Nice heavy chain, but the padlock is very tempremental. Two or three times now its jammed so that you cant unlock it, the last time it took three of us over an hour to unlock the thing. Will take it back to swap for something else.
    Response of the brand
    I'm sorry to read that the padlock is jamming. Have you tried squirting some grease/oil into the two holes for the U shaped shackle? Try to avoid WD40 which can be OK for un-jamming or to displace water but is also degreaser (which is is not always desirable).
    If you leave your lock out in the rain then this is good practice. If however, you keep your lock indoors or under a shelter then there may well be an issue, in which case, please return it to us for an exchange.
    Peter Lazarus UK Cycling Market Manager DECATHLON
    jamie was satisfied with this answer
  • Good but very very heavy

    Piyush (India)
    Used for 1 week or less
    Its a solid lock but can anybody suggest that when I am travelling can I fasten this lock to any part of the cycle so that i dont have to carry it in my bag ??
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