I have a Triban RC 120 road bike from Decathlon (link). It runs a Microshift 2x8 speed system.

I plan on getting a direct drive smart trainer from TacX (TacX Flux). I wanted to know if I can use this road bike with this trainer? I am concerned if the two will work properly and shift etc. properly when used with Rouvy or Zwift.

I have tried to google this and not gotten anywhere. I also tried reaching out to local bike shops and Decathlon and they dont seem to have a clue either.

  • An interesting combination, the trainer will be much more expensive than the bike. Most would choose to buy a better bike instead. Commented Jul 20, 2021 at 13:35
  • Buying a better bike would no doubt mean no trainer. OP could always use n+1 logic and get a better bike and trainer.
    – Dan K
    Commented Jul 20, 2021 at 14:34
  • 1
    you are both correct. i could buy a better bike and also the trainer but there are other competing uses for a limited sum of money. :(
    – Sriram
    Commented Jul 20, 2021 at 15:24

1 Answer 1


It should work:

  • the freebody is the almost the same as the R8: the trainer has the longer version of the Shimano Hyperglide free body (to allow 11 speeds road cassettes). You will need a spacer to fit a 8-speed cassette, that should be provided in the package of the Flux.
  • I don't know if the RC120 uses a 130mm or 135mm rear fork width, but the Flux is compatible with the two widths anyway.
  • The RC120 uses a quick release system, that is supported by the Flux.
  • 1
    Microshift cassettes are compatible with SRAM and Shimano hubs.
    – Dan K
    Commented Jul 20, 2021 at 14:40
  • thank you for your response @Renaud. Any videos etc. you could point me to for more info on this spacer and hub?
    – Sriram
    Commented Jul 20, 2021 at 15:25
  • Everything is explained in the user manual (you can find a link to the PDF from the product page that you gave).
    – Rеnаud
    Commented Jul 20, 2021 at 20:07
  • 2
    @Renaud thanks for your help. I got the trainer and mounted the bike. Everything is working as it should. Thanks.!
    – Sriram
    Commented Sep 24, 2021 at 7:35

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