I thought it was just the front mech that needed changing, ST-6700 should work with RD-7800 This chart says so, also shows ST-6700/FD-7800 as a combination which will work, but non-optimally, probably means you'll have to routinely use the trim function.
I thought it was just the front mech that needed changing, ST-6700 should work with RD-7800
This chart says so, also shows ST-6700/FD-7800 as a combination which will work, but non-optimally, probably means you'll have to routinely use the trim function.