Hello!
I want to replace my Cannondale Synapse old RS785 and horrible RS505 with R8000 set that I bought second hand. Now I realized that the frame is Post Mount, I have space for an adapter on fork but at rear end it has non-standard design which comes with Post Mount adapter. I was browsing everywhere for some adapters almost no luck. I am pissed off already, would like to sell the bike and the set.

Only thing I found is a 140mm C'dale adapter: https://cannondaleexperts.com/products/cannondale-synapse-carbon-disc-140mm-rear-brake-adapter-shimano-kp318?variant=31414143025289
Maybe with this I can mount a PM to FM adapter and install the new caliper with 140mm rotor.
Or cut the current adapter in half and install PM to FM adapter with 160mm rotor.
What do you think? Is it not odd to have another center of movement? (See pic)

by Any-Candy7496

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