Quote from: XMCS-Lily on October 20, 2026, 09:05:56 PMtake a look at this picture，these are the updated molds.We've upgraded to 48T, compatible with GRX 50/34T. However, the website still defaults to 46T when placing orders. Please contact us if you need the 48T version.

Hi,
what would be the mould recommended for a 2by - 48/31T? The new or the old one?

Quote from: Requiem84 on September 22, 2026, 05:37:22 AM
The confusion is a language thing. 'Only 1x 46T' means 'no larger 1x chain rings than 46T'.

Mind you, my GRT frame (literally first one made) doesn't have a Di2 battery exit port (the VRT does). That should be fixed in the current frames, but best to re-confirm when ordering the frame.

Understood.

I do indeed have a Di2 drivetrain, so thanks for the heads up.

Thank you all.

Quote from: PeterXu on September 22, 2026, 02:55:34 AM
Yes, the Di2 battery goes in the seat post.

Current version GRT can take 48/31T GRX 2x chainrings without any issues. We didn't try any other sizes though.

Can you also tell me what the maximum rear tyre width is with a GRX 48/31 2x setup?

Hi, can someone help clarify this? I've been looking at the XMCS GRT as a potential frame upgrade, but I'm finding conflicting information about whether it supports 2x, which is a must for me. I tried emailing XMCS, but got no response.

The XMCS Netherlands site says the frame supports 1x and 2x, and photos/videos of the frame clearly show a braze-on front-derailleur hanger.

However, the XMCS .cc site says:

"Current frame takes 1x 46T only, we are updating the molds fitting for 1x48T, or 50T."

From this thread, I also got the impression that the current version may still be 1x only.

Can anyone with more knowledge clarify whether it actually supports 2x? Ideally I'm interested in Shimano GRX 2x12, specifically 48/31 with a front derailleur.

Thanks.