page_title: Seatpost
section_title: Aero
hierarchical_section_title: Seatpost / Types / Aero
caption_attribution_description: English: Aero seatpost on an Orbea Ordu bicycle.
context_page_description: A bicycle seatpost, seatpin, saddlepole, saddle pillar, or saddle pin is a tube that extends upwards from the bicycle frame to the saddle. The amount that it extends out of the frame can usually be adjusted, and there is usually a mark that indicates the minimum insertion. Seatposts can be made of steel, aluminum, titanium, carbon fiber, or aluminum wrapped in carbon fiber.
context_section_description: As alternatives to the integrated seatpost mentioned above, some seatposts merely have an aerodynamic shape that either matches the shape of the aero seat tube or is only not round above a certain point. In the case of aero seat tubes, there are a variety of clamping mechanisms for such seatposts that include pinch bolts and wedges.
caption: An aero seatpost in an aero seat tube held with two pinch bolts on an Orbea Ordu.
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