Seatpost diameter sizes (standards)

Bicycle seatpost dimension (width, size) standards

Updated: 16/11/2018. This post explains what kinds of seatpost diameters are most commonly used and how they are measured – to avoid mistakes when purchasing, or changing seatposts. The post deals only with diameter (width). The length of the seatpost depends on frame geometry (design) and size – i.e. how much the saddle needs to … Read more Seatpost diameter sizes (standards)