Definition: The seat post is the component that attaches the frame to the seat. It is tubular in nature and can be used to adjust the height of the seat on your mountain bike by sliding it in and out of the frame.
More from About.com
Browse Mountain Biking
Seat Post
By Kevin Tisue, About.com
Suggested Reading
Elsewhere on the Web
Must Reads
Essentials
Most Popular
©2008 About.com, a part of The New York Times Company.
All rights reserved.