The Pinarello X1 Seatpost is a genuine Most-built replacement for the aero seatpost platform shared across the Dogma F and X-series frames. Its Toray T1100 UD carbon construction and 3D printed titanium head match the specification of the original Pinarello part, so it clamps and rides the way the frame was built around it. What Our Gearhead(R) Experts Are Saying:"Ordering this post means I know it clamps in the Dogma's seat tube exactly the way the original did, so I'm not second-guessing fit before the build even starts. That confidence matters when the alternative is gambling on an aftermarket profile that might not seat the same way."