I appreciate any help in identifying this bike. It's a Cannondale Synapse with "CAAD" on the frame, 105 handlebar shifters and rear derailleur, and Tiagra front derailleurs. 2 sprockets in the front, 10 in the back. The serial number is IM32955. I've been looking around on sites like those below, but

Can anyone help out? Thanks VERY much!

Sites for images:

full bike

  • 2
    How many sprockets? Assuming the drivetrain is original, 105 went from 9 to 10 speed around the right time for it to be helpful in working this out (and 11 speed a little later). The cassette lockring may even have the more detailed groupset number on it. That could be good, though the cassette has presumably been replaced by now
    – Chris H
    Jun 29, 2023 at 14:46
  • 1
    Added in the main text. Thanks for the clarification!
    – jp c
    Jun 29, 2023 at 20:16

1 Answer 1


It matches the 2013 Cannondale Synapse 5 105 Women's from bicyclebluebook.

enter image description here

  • And the mystery is solved. Thank you!
    – jp c
    Jul 2, 2023 at 20:16

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