I figured I would get a spare hanger for my '10 Flash 29er alu. Not so easy.
The closest match was a CAAD9 hanger.
I don't know if the hanger is from a Synapse (because of the SAVE stays), or its own special hanger.
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: Hanger for the Flash?