Why do you want to replace it?

Good question. I bought the bike used a while back and while going over everything I noticed the clamp was on upside down (text was upside down). When I flipped it over the top black anodized finish was damaged. Looked mostly cosmetic, so I shrugged it off. Looking at the clamp, it has a raised lip on the inner diameter that seems to rest nicely on top of the seat tube and create a snug fit to the seat post. The original owner flipped it so that this lip was pressing on the seat tube, which I presume increased pressure only in that area and not across the whole collar as designed. Recently I noticed the seat post has been creeping down slowly, despite how much I torque the bolt. The bolt itself needs replacement as it is showing stripping in the head area.

Short term fix is to put some carbon paste on the seat tube, get a new bolt, and grease the threads. Longer term I am suspecting the previous owner knew this was slipping and defeated it by having the lip press on the seat tube. I have no idea how the aluminum of the top of the clamp go so damaged, and from a cosmetic standpoint, it looks like hell running it right side up.

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"It never gets easier, you just go faster."
-Greg LeMond

You can get a new one from here: https://www.specialized.com/...d-seat-collar/104962

or here: https://fairwheelbikes.com/...amp-seatpost-collar/

Thanks for sharing these links. So the answer is "yes, this is a standard unique to Specialized"?

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"It never gets easier, you just go faster."
-Greg LeMond