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920 Bike D Lock 25cm

Regular price: Dhs. 180.00

Sale price: Dhs. 54.00

Special product, Innovation Special product, New Release Special product, Sale End series Personalize me Eco-design Same day delivery

Protect your bike against thieves with this bike lock. Make sure your bike is fully secured when you're not riding it.

A high-security bike lock that's big enough for two bikes at once. Secures both the frame and the wheel.

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Sale price: Dhs. 54.00

Regular price: Dhs. 180.00

Product Videos

Product Features

A photo of the 920 Bike D Lock 25cm in use

Theft resistant

High-security lock.Safety level rating: 8/10.


Can be used to secure 2 bikes to a fixed object in the best possible way.

Easy transport

Universal mount lets you attach the lock to the frame of your bike.

Impact protection

Supple rubber crossbar and U to protect your bike's paint.


1600 g

Product Reviews

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1144 reviews

920 Bike D Lock 25cm
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good but big for hanging on bike

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Very good

Strong lock

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Looks good

The lock is heavy. That is good, a light lock is easy too cut.

D Lock

Great lock little heavy but secure

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Very sturdy

I feel that this lock will help save my bike from the sticky hands that exist around my area

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Can't attach to a female bike

This lock can't be attached to a bike without a high cross bar. It is also heavy and clunky.

All good

A gift for my son for his bike. So far so good.

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Good lock

Does what it says on the tin, good basic strong lock

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Not compatible with BT'Win Bike ST100

I have received the D-Lock with my Bike order and spent ages trying to find a suitable way to attach the lock to my bike. I picked this lock as you can fix it to your bike whilst it is not in use. But with the break cable on the underside of the frame I have now had to attach it to lower frame. It's not perfect and will need to fix something else to prevent it moving about when cycling. I would've expected the lock to be compatible with BT'Win bikes or at least say which bikes it is not compatible with. Having now read the other reviews I am not the only one. I have opened the packaging - not sure if I can return or exchange the item? I have also order the same lock as I am trying to order my wife the same bike but will likely return that lock and find something more suitable/practical.

Absolutely huge

I bought this to fix to the frame of my new bike on a recommendation from a friend but when it arrived it was much bigger than the frame so wouldn’t fit. It is also very heavy!

Does not fit the bike frame

Sadly, I'll have to return the lock, as it's too big to store when not in use for the Rockrider (small) womens bike. Would be good for Decathlon to have 'related' accessories on the product selection page, that points users in the right direction as to what lock best to get.

Thank you for your feedback regarding the information made available for this bike lock. I would be quite complicated to create some compatibility chart but I think it merits more thoughts as it may well be useful. Providing information such as the external dimensions may be useful and I will ask the team to look into providing this.
If you are not happy with the lock, please feel free to return it to us for a refund or an exchange.


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Useless bike lock! Waste of money

Purchased this lock, and within less than 6 months, the locking mechanism has gone faulty and no longer opens. Does not fit around any pole or bars. Really heavy to transport. Absolute waste of money!

Hi Steven. Thank you for leaving your feedback on the B'twin 920 D- Lock. We offer a 365 day return policy if the product does not meet the intended use and you're also covered for 2 years in case of any faults so please do not hesitate to take the lock back to your local store when it reopens or to contact our Customer Loyalty Team to arrange a refund or exchange.

MICHAEL, Road Cycling Leader, DECATHLON UK

Sturdy, but difficult to mount to bike

I bought this lock alongside a Rockrider ST100 bike and I've had great difficulty getting the bracket onto the frame. It's designed to hang from the top part of the frame, but on my bike the brake cable runs along it so I can't get the strap round. I've had to attach it around the water bottle bolts on the bottom part of the frame, hopefully it stays put. I'm a bit annoyed that the staff sold me incompatible products. Anyway, besides that it's a solid, heavy lock and I'm fairly sure it'll keep the bike safe.

Hello Callum!

We're glad to hear that the lock is sturdy enough for you.

It's unfortunate to hear that you had difficulties attaching it to your bike, but i hope it serves you well over time.

Thank you for taking the time to leave us a positive review.

We hope to see you in store again soon.

Have a great day!

Decathlon Milton Keynes

solid lock

Solid lock and useful frame holder decent size but too big for the rockrider 520 frame in medium.

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Additional Product informations



  • 100% Steel


  • 100% Polypropylene

Main section

Tubular shackle made of hardened steel for superior strength and durability.Resistant to bolt cutters, saws and hammers.Supple rubber coating to stop the lock banging against your bike and damaging the paintwork.Inner shackle length: 25 cm (enough to attach 2 bikes).


Pick-proof lock.Rust-proof keyhole cover.Comes with 3 keys.

B'secure certification

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.

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