9point8 seatposts can be easily converted from inline to offset (25mm), or vice versa. Conversion kits are available and easy to install. Both the Inline head and the Offset head fit onto any 9point8 post. They both use the same fasteners and other parts, so you can easily convert your post from inline to offset, or vice versa, by simply replacing the head only. his product, the Offset head, is also known as the Inline-to-Offset Conversion Kit, since it will allow you to convert a 9Point8 seatpost with an inline head into an offset head.