Originally Posted by
Princess_Allez
I have the sworks power saddle and the model below it (ti rails). They were identical aside from the rails; the sworks has carbon rails that require carbon specific mounts. The seat material (carbon) is the same and the padding level/material are the same.
Mine S-Works Toupe and Specialized Toupe Pro have carbon rails, I've swapped saddlles, no need to change a seatpost mount.