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Btwin Triple Chainwheel Front Derailleur

Sale price: $10.00 Regular price: $16.99

Front derailleur compatible with all frame diameters. Diameter: 34.9 mm (or 28.6 mm and 31.8 mm with adapter).

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Size: Select a size
Sale price: $10.00 Regular price: $16.99

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San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8298275

Product Videos

Product Features

A photo of the Btwin Triple Chainwheel Front Derailleur in use

Btwin Triple Chainwheel Front Derailleur | 7 or 8-speed mountain or hybrid bikes. Fits Shimano and Sram.

Front derailleur compatible with all frame diameters. Diameter: 34.9 mm (or 28.6 mm and 31.8 mm with adapter).


For 3x7 and 3x8 SRAM, Shimano or Btwin drivetrains


For maximum 48 tooth gear wheel.


Diameter: 31.8mm (or 34.9mm with adapter).


155 g.

Product Customer Reviews

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297 Reviews
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Btwin Triple Chainwheel Front Derailleur,base color
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Front derailleur for gears

Easy to change Great description for product needed

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It works

Ended a reverse pull, and this was it.with dual capabale.

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v bulky at the back, check your wheel to frame gap

Well, it's cheap, it looks cheap and bulky but strong, and what Decathlon don't appear to bother to mention is that because the actuator sits at the back you need about 30mm clearance between your rear wheel and the bike frame to get it to fit. So it's good for tractors, maybe not so good for bikes. And as you have to destroy the packaging to get it out there's no way to return it of course. Still, it's cheap.

Decent enough

As a universal/ unbranded piece works very well.

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Great for the price

It worked well and was more robust than I expected.

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Thank you for taking the time to leave your feedback, Simon.

We really appreciate it.


Sports Advisor (Customer Service)

Decathlon Wednesbury

Decathlon UK Limited. Company number: 03140144. VAT number: GB679262296.

Registered office: 9 Maritime Street, London, SE16 7FU.

Great deraulleur

Fitted my bike well. Is working great.

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Excellent value works well

Excellent value works well

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Front Derailleur

Well constructed unit but be aware that due to the actuation mechanism being rather bulky at the rear it will not fit some bikes with limited clearance between the seat tube and rear wheel or mudgaurd.

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Performs well for the price

Easy to install with various mounts for different clamp sizes. Shifting is light and easy

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Unable to adjust for 3x8, 42,32,22T

For me I could not get this to work, I have 22,32,42 crank set (btwin), but no matter how I adjusted it the throw just did not seen adquate to move across all 3 rings. I have a brand new chain, new rear mech, and the crankset and rear cassette are only 1 year old. I returned to my 13 year old suntour one and that works well (in fact the stoke is a little too far on that) Mountain bike Gear selectors shimano ST-EF29-8 / ST-EF29-L

Thank you for sharing your experience of using this front mech. Installing a front derailleur can feel like alchemy sometimes and certainly isn't the easiest to install, especially with a triple chainset.  MBR probably has the best film available on this topic:
If after checking all of these points, there is no joy, please feel free to return it to us for an exchange or a refund.
Peter Lazarus, National Cycling Manager, DECATHLON

Used this to replace an old derailleur a coup[le of months ago that wouldn't adjust properly and was unreliable. Fitting was easy and it adjusted well. I used this on a bottom pull with a Shimano index shifter and it works well and reliably after it has been set up. I also liked the add on adjustment shims in the clamp which allowed me to make a good fit to the stem. I thoroughly recommend this and would say it is as high a quality as any other front derailleur out there at a bargain price.

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Triple Front Mech

I bought the front mech for my old road bike refubishment project (1985 Barry Hoban/Coventry Eagle) and found that the original front mech did not have enough travel to reach the large chainring. This MTB mech has loads of travel and easily helps the chain to swap between the chainrings. It is bulky compared to the Campagnalo mech that it replaced but does the job just as well.

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This product does works well. It's actually precise and also shifts gear quickly!

Front Gear Changer

I have now a new one

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Additional Product Information



  • 100% Aluminum

Main fabric - Bottom

  • 100% Steel

Technical features:

Top or bottom routed cable Diameter: 34.9 mm (or 28.6 mm and 31.8 mm with adapter). Chainwheel of maximum 48 teeth. 5.5 oz.



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
  1. product-research

    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