I have a nearly new FSA SLK carbon crankset (compact 50/34) for sale, 175mm crank arm length. I used it for about 100 miles and it is is pristine condition with just a few marks on the chainring ramps. Comes with the MegaExo bottom bracket (English threaded) plus a brand new FSA 36t inner chainring, in case you want to have a bit more overlap in the gearing.
$150 shipped - SOLD