As most of you know, the Soloist seatpost can be changed to either a road or tt/tri position. The seat rails are clamped in place by a bolt and a bolt with a flanged nut.

While adjusting my saddle last night, the nut failed (both flanges were sheared off when I was tightening it.) And while I found a replacement seatpost head online:

http://www.excelsports.com/main.asp?page=8&description=Seatpost+Head&vendorCode=CERVELO&major=1&minor=19

It aggrieves me to have to pay 20 bucks for a ~15 cent nut. 

Anyone know of a Cervelo small parts source? I find it astounding that a 15 cent nut can render a $2000+ bike un-ridable...

 Cheers from Victoria BC, Canada

Another option is to check out a specialty machine or parts shop that may have similar bolts for a few cents.

 I was able to source the bolt at Home Depot of all places - - it doesn't use any unique thread pitch so I just matched it and was back in business.  Actually I went with a hex-head bolt and was able to tighten it through my saddle cutout (at the time, different saddle now) FAR easier than the standard bolt.

 Hope this helps.

Thanks everyone for all your suggestions. I bit the bullet and ordered 2 seat post heads from ExcelSports. I figured in 3 years time (~when the next nut fails) this part will be impossible to find without a hack so I figured I'd stock up a little.

Cheers