Originally Posted by
cyclingman1
...There are no part numbers on the FD that are obvious. It says "Ultegra" on the cage and "Eclipse" on the clamp. I have not and am not going to disassemble the bike looking for part numbers. As far as cranks, I know they are 175mm and are 50/34...
The FD part number is stamped onto the backside of the inner cage, readable from the non-drive side. The STI shifter part numbers are molded into the shifter body, beneath the hoods. The crankset numbers are (likely) cast into the inner side of each crank arm. Or, ask your mechanic. He will know the part numbers by observation.