Short 75mm pivotal seat post with internal clamping
The Stolen Internal Clamping (SIC) pivotal seat post is pretty unique with its smart 2-piece design. It both works with frames with, and without, integrated seat clamp.
Frames WITH integrated seat clamp:
You'll only need to use the short and light outer alloy part, and tighten it with the integrated seat clamp on your frame. Also using the inner-piece is optional.
Frames WITHOUT integrated seat clamp:
You'll have to use both parts. When tightening the inner part through the top patch on your pivotal saddle, the outer part will expand in width as a wedge, and thereby clamp to a fixed position inside the seat tube.
Notice: Not designed to clamp on a butted part of the frames seat tube, and only works with pivotal seats.