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Btwin, 9-Speed Bike Chain

Sale price: $24.99 Regular price:

Our chain was designed in collaboration with KMC, a globally-recognized brand and a leader in bike drivetrain parts. The chain has 118 links and is sold with a quick release

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Sale price: $24.99 Regular price:

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San Francisco, 735 Market St. Options

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Model: 8640929

Product Features

A photo of the Btwin, 9-Speed Bike Chain in use

Btwin, 9-Speed Bike Chain | Designed for replacing the chain of your 9-speed bike. Compatible with 9-speed Shimano, Campagnolo and SRAM derailleurs

Our chain was designed in collaboration with KMC, a globally-recognized brand and a leader in bike drivetrain parts. The chain has 118 links and is sold with a quick release


For 9-speed transmissions of all brands.

Product Customer Reviews

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326 Reviews
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Btwin, 9-Speed Bike Chain,base color
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I was skeptical of the quaiity as it was so cheap and expected it to break. But pleasantly surprised. This works great!

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No issues

Put it on a winter bike that gets lots of abuse. Didn't wear out any faster than any other chain I have used.

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Like most of my purchases from Decathlon this cassette was a replacement for my existing one that needed replacing

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Just a replacement

After umpteen thousands of miles ,chains do wear out and this was a replacement for a similar chain that lasted for ages

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Mtb chain

Works well. Great speed link.

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Does what it needs to do

It's a KMC chain boxed up in a Decathlon box. From what I can tell, it's a KMC X9 Grey chain. Cheaper than buying it in a KMC box. It's been on my bike now for a couple of months and I'm still happy with it.

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No split link

I damaged the chain and needed 6 pairs of hands to join the chain. Pin wouldn’t push through and damaged the chain do have to go back and buy another chain and separate split link. So not impressed at all.

Did the job

Did the job, no quick link though so a little dissapointed

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Excellent value

I've been using these chains for many years and cannot fault them

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Within one month of use the chain frequently slips on elevation.

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Hello Vishal,

Thank you for letting us know about the issue you faced. We would be happy to help you with this. It is unfortunate that the chain is frequently slipping. I apologize for the inconvenience that has been caused.


I suggest you reach out to the nearest decathlon store and our workshop technician will be able to identify the issue and provide you with a solution.


Very bad product

Installed the chain and rode for hardly 2000 km. The chain started to loosen very fast than expected.

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Hello Kush,

Thank you for your review. The cycle chain is a component that is subjected to a lot of wear and tear. The maintenance of the drive train will play an important role in how long components can last. There are also external conditions that affect the performance of the drive train such as rain, dust, etc. The impact of all the above-mentioned factors makes a difference in the number of Kms that you can churn out of a chain or a cassette. I will keep the product manager informed of your feedback and thanks again for sharing. Feel free to reach out to me if you have any questions.

It's a chain alright ...

A chain is a chain is a chain, normal quality, normal behaviour, don’t know why this costly.

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Chain was shimano so it's good and I had issue with its chain link it was bent while I purchase the cycle, so I replaced it with new one and it provide easy movement with less noise and less friction its a good quality one...

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Good Product, Service center did good fitment job.

After fitment I did 300BRM, chain set supported well.

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Wonder Full Product In This Price

Blindly go for it

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Additional Product Information


Main fabric

  • 100% Steel


Easy assembly by adapting the chain length with a chain tool available on our website (ref: 8351521)


Easy disassembly using a quick-release chain tool and/or a chain tool available on our website (ref: 8352339 and 8351521)

Number of links

117 + 1 quick release = 118 total



Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
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    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

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    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual