I'm planning to purchase my first direct from China frame to build up over the winter as a race bike. I'm leaning towards a Model S with EPS molding. I'm just a little unclear on the sizing an geometry of this frame. Some measurements look like they are taken from different points than Trek uses.

Is anyone able to comment on what size would be the closest to a Size 56 2023 Emonda SLR? I appreciate the help and info available on this site.

It looks like the Size 52M is 1.5mm shorter in reach and 7mm higher in stack. I'm currently riding with 10mm of spacers on my Emonda, it seems like this size would work well with less spacers. I'm 183cm tall with an inseam of about 31.

Anyone else roughly my size care to share what size Model S they are riding and what the fit is like?