Bottom Bracket thread English (68mm). Geometry of frameset you can see in the last picture.
Feel free to ask questions. The item "Cervelo RS CSC Carbon Road Bike Frameset" is in sale since Saturday, March 30, 2019.This item is in the category "Sporting Goods\Cycling\Bicycle Frames". The seller is "arnax69" and is located in Panevezys. This item can be shipped worldwide.