27.2mm Dropper Post with no more than 155mm Exposed Section

[SgtRock]

Hi

I know there is plenty of discussion about dropper posts but my question is specific to posts that will fit a cross bike where my seatclamp to saddle rail distance is 155 to 157mm. Diameter needs to be 27.2mm as stated.

Degree of travel gives me an idea but if the post has say 100mm travel the rest of the mechanism needs to be no more than around 50mm or the fully extended position will be too high for my preferred position.

Remote or under saddle operation is ok.

Thanks in advance.