That’s not exactly Specialized Aethos territory. A painted S-Works Aethos (54cm with all the hardware) weighs 690g. Granted, unlike the Aethos, the TCR is meant to be a more complete bike rather ...
The Specialized design team have put weight-saving learnings from the Aethos (which is a featherlight 585g in size 56) to work with the SL8, claiming it is the lightest frame on the world tour.