Find a really long quill stem and take the bolt and expander out of it. Then drill a hole in the top of your cheap seatpost of choice and slot it or slice it at an angle at the bottom depending on the type of expander. And hey presto, you have an expander seatpost and some power tools you'll never need again.
Find a really long quill stem and take the bolt and expander out of it. Then drill a hole in the top of your cheap seatpost of choice and slot it or slice it at an angle at the bottom depending on the type of expander. And hey presto, you have an expander seatpost and some power tools you'll never need again.