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Regular price: $24.99 Regular price:

Long screed rear derailleur compatible with Shimano and Btwin 7-, 8-, or 9-speed drivetrains for fluid and precise gear changes.

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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: 8328484

Product Videos

Product Features

A photo of the REAR DERAILER 7 TO 8G, . in use

REAR DERAILER 7 TO 8G, . | recreational mountain and hybrid bikes with 14 to 24 speeds.

Long screed rear derailleur compatible with Shimano and Btwin 7-, 8-, or 9-speed drivetrains for fluid and precise gear changes.


For B'Twin- and Shimano- compatible 7- or 9-speed drivetrains.


Compatible with 11- to 34-teeth cassettes.

Easy assembly/dismantling

Screw directly onto the derailleur hanger.


10.6 oz.

Product Customer Reviews

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655 Reviews
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REAR DERAILER 7 TO 8G, .,base color
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Good for the Price

A little difficult to fit but luckily I have a besite who knows how to do it. Ok for an everyday cheaper derailleur.

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Btwin 7to 8 speed derailleur

Excellent value, works a treat, what more can you say, amazing value, does exactly what its meant too.

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works well, Bargain

used this on a 1996 Road bike to increase gear range ! Cheap cheerful and easy to set up

Good Replacment

I am a Professional Bike Mechanic and I needed a reasonable priced long cage rear mech which was Shimano compatible. I had not purchased one and called into Decathlon on my way past to get some cycle kit. I picked one of these units up for the repair I had to do on a Raleigh Ladies Mountain Bike..... The Mech fitted with no issues at all aside of setting up the low and high limit screws as this was being fitted to a 7 speed freewheel. The bike was fitted with the awful grip shifts and with this unit it works 100%... so a cheap and great replacement for O.E equipment

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Excellent piece of kit

If you're not concerned about weight (which I'm not) this is perfect. I like to ride long distances... I need stuff that works. This just works. I fitted it a couple of months ago & recently completed my 1st 200km Audax...this derailleur worked flawlessly. I replaced a very well known brand derailleur with this one, as I could never get it quite dialled in. No such problems anymore.

very good products. and service supports EXCELLENT

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Very good

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Good In Working

Easy To Shift Gears

Rear derailleur not working properly after 10km run

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Hello Premanand,

Thank you for taking the time to share your feedback. It is unfortunate that the derailleur is not efficiently working. I apologize for the inconvenience that has been caused due to this.

The gear bikes would need frequent setting to ensure it is functioning rightly. I request you kindly take your bike to the nearest Decathlon store and our technicians will be able to diagnose the problem and tune the derailleur. Thanks !!...


very good shifting

total value for money product. kudos to decathlon

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Nice But Why It Is Out Of Stock



Wanted a Hook Type spare for My Bike. But got a different one while ordering on-line. Would be helpful if seller makes it clear so that customers who are doing a retro-fit can be benefitted. Had to exchange this through my cycle mechanic. Couldn't use it and hence unsure about its utility.

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Bad Quality

I installed this in kross impel 5.1, gear changes automatically, no proper shift .

Hello Pavan

Thank you for taking the time out to review our product, Derailleur should be fixed by a trained technician as after every change/Replacement the gear system needs to tuned properly, cable tension needs to be readjusted, and you also need to check on the compatibility between the Derailleur and Shifters. I would suggest you to visit a cycle shop and ask the technician to check for the tuning.





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Additional Product Information



  • 100% Steel

Outer fabric

  • 100% Polyamide 6. 6


Screed length: Length Maximum teeth: 36 teeth Min teeth: 11 teeth Steel body



Care instructions

Regularly degrease, clean and lubricate your bike to prevent rust and prolong its lifetime. Do not clean using high-pressure water jets.

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Size Guide Visual