Also, 1st gear is lower than the FZ1 and the overall gearing is reduced.
Less plates/different springs in the clutch to make it feel lighter.
Forks are different, rear shock is the same size but different workings.
Fazer8 has a bigger fairing, tank 1l smaller.
Frame, engine covers, pegs, levers, gear change linkage, switches etc is the same as the FZ1 as far as I know.