I currently ride an Argon 18 Gallium Pro, and it came with a seatpost, but the thing is a tank (~240g). I think I can drop at least 90g with a new seatpost and still not break the bank. Any suggestions? Looking for something light, but also stiff. I weigh 155lbs. I need 25mm setback as well

Possible candidates:

3T dorico

Thompson masterpiece

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3T Dorico LTD (have two of them myself). Depending on the length you need around 175 - 180 grams. Has good support under the rails too - which many ubber light posts (setback or not) fail to address....putting stress risers just where you should avoid them.

The Thomson..........I hear time and time again how good it is (so listen to that) but for myself I just can't get beyond the unorthodox looks of that thing (setback version).

I've been on a Woodman Carbo DX for over 2 years. 25mm of setback and 157 grams in a 31,6mm X 350mm. The only place ai could find it is at XXX Cycles in France, Best of all no creaking or saddle creep.

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KCNC Ti Pro Lite. Not sure what diameter you need but the 27.2 is 143g. Pretty good weight for the money and I have had no problems with mine in the last 2 years.

Thompson Masterpiece

I like the idea of the Thomson Masterpiece. The texture of the post reduces slippage, and they seem to be consistently durable.

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