High Security Bike D-Lock 900 M ART2

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High-security bike D-lock designed to protect your bike from theft when you're away from it for long periods. ART2 certified bike lock, Sold Secure silver

The D900 M is an ultra-compact, ultra-sturdy, high-security bike lock. Lightweight and easy to carry, this bike lock lets you attach your bike's frame to a fixed point in an urban environment.

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Our services :

  • Free delivery for Decathlon brands orders above $399
  • All Decathlon products are eligible for lifetime return

Products benefits

Theft resistant

High-security D-lock. Security level rating: 8/10.


Usable shackle length: 15.9 cm.Secures a bike to a fixed object.


Weight: 0.8 kg

Easy transport

Mount sold separately. Compact and easy to carry in a bag.

Technical information


Despite what many people may think, tamper-proof locks do not exist.
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.

Security rating

The security rating helps you choose the lock that is most suited to your needs.
For this reason, B'TWIN defined a test protocol with an independent laboratory, CNPP, based on real-life theft techniques.
This unique protocol allows each lock to be given a comparable rating from 0 to 10 indicating how theft resistant it is.

Lock body

Tubular shackle made of hardened steel for superior resistance.
Reliable resistance to bolt cutters, saws and hammers.
Rubber coating to stop the lock banging against your bike and prevent it from damaging the paintwork.
Inner shackle length: 15.9 cm.


Abloy anti-picking lock mechanism.
Hundreds of different keys to limit the risk of theft.
Comes with 3 numbered keys.


Product concept & technology

Product Composition

Metallic structure 100% Steel Handle 100% Polypropylene Straw 100% Steel


Remember to lubricate your lock from time to time to make more durable.

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