Proflex 552 seatpost size

[gtturbo]

I seem to have a bit of an e-stay fetish at the moment. At the beginning of June I had none and now have 3

Anyway the latest a Proflex 552 needs a new seat post. A previous owner has taken the novel approach of machining ( I use that term in the loosest sense of the word ) an oversized seat post down with an angle grinder it would appear. A quick search doesn't seem to yield any particularly accurate results as to what the seat post size should be. I measured it with my cheapo vernier at about 28mm but does anyone have one they could check or know for certain what the size should be.

Thanks in advance.

 

[gtturbo]

Update - Just in case someone else has this question in the future it is a 28.0 post.

 

[camatas]

Thanks for the info. I recently purchased a Proflex 552 frame. I was looking for a SR Suntour SP12 NCX 27.2mm suspension seat post, and I was wondering if it would fit.