I think they do but only between the CS lengths of the different models which have the same CS length throughout the range (as far as I can tell). The longest being only 435. What I’m thinking is that it could be fully modular if there was either a 10mm extension like on the Megatower or another option for more mixing and matching of the chainstay lengths beyond the two they have (both relativley short). Kinda like they offer the 10mm On the headset.
I ride XLs and am longer chainstay curious so it’d be cool to have a platform where you could experiment without having to buy whole new frames.