I have both good used 6800 calipers (from my Focus Izalco) and brand new R8000 calipers.
I als0 have a RD-6800 with a Fourier "big cage" with ceramic bearings but I don't know if you are only looking for a R8000. I was running 11-28t.
How much would you like to spend?
How much you after for the R8000 callipers?
I'd be keen on the 6800 calipers. I ordered a new mech last night.
@Vince started
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I have both good used 6800 calipers (from my Focus Izalco) and brand new R8000 calipers.
I als0 have a RD-6800 with a Fourier "big cage" with ceramic bearings but I don't know if you are only looking for a R8000. I was running 11-28t.
How much would you like to spend?