I have just got me a fourplay 2021 thanks @ben_travis as an upgrade from a gen 1 fourplay (for sale soon) and most stuff fits.
However i have the old hope trial IS mount callipers for 180mm rotors and the new frame is post mount +20 so no amount of adaptors is going to work unless i run a 220mm rotor!
I do have a tech M4 and a v2 callipers which are post mount but they are crusty and will need rebuilt and probably pads so do i bother? or just run some old that slxs/xts with big rotors.
thoughts people please..