1

I'm looking at a 2019 Giant TCX Advanced Pro 2 which was sold as a 1x. I have a Shimano 2x groupset laying around and would love this bike as a 2x.

Based on this image from this sold listing, it looks like there's a spare entry into the downtube:

Photograph of Giant TCX Advanced Pro 2 Cyclocross Bike - 2019, Small

And this review shows a hole behind the seat tube above the BB:

Photograph of Giant TCX Advanced Pro 2

Are my eyes decieving me or could I run gear cable down that and into a front derailleur?

3
  • There does seem to be a rubber plug on the right hand side of the seat tube - it may cover some tapped holes for a braze-on mount. You might try contacting Giant, or find a user/service manual for this frame.
    – Criggie
    Dec 3 '20 at 21:14
  • Is there any penetration or hole on the bottom of the bottom bracket area where you could feed a cable through? That would align with the standard cable guide bolted to the bottom bracket of bikes that have a front derailleur? Is the seat tube perfectly round in the area where a derailleur mounting band would go? Is the seat tube the right size in that area so a derailleur mount would fit properly? If not, and this would be all-internal routing, how would you feed a shift cable through the frame? Dec 3 '20 at 22:06
  • There is also an unused exit hole closer to the head tube. Seems like this frame is not 1×-specific. Dec 3 '20 at 22:20
2

Response finally came through from Giant:

Yes, you should be able to route cable for a front derailleur.

1
  • Great find - thank you for coming back with a verified answer from an authorative source.
    – Criggie
    Dec 15 '20 at 3:24

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.