Originally Posted by
dmark
No. The back of the body is different as well as the face of the hub.
Thank you, that is the answer I needed. I can find a parts diagram for the FH-M570 hub but not for the FH-M560 hub. Yet what stops me about the FH-M560 7-speed freehub body, even if would fit and work on a FH-M570 hub, is its having UG/HG conversion threads on it because cutting external threads onto the outer RH end of the body involves removing spline metal which weakens the spline's bearing surface for the outer RH sprockets, but the newer FH-RM30 7-speed freehub body is HG and so does not have those conversion threads.
My FH-M570 hub has the 135mm OLD needed for my bike and I am thinking that replacing the hub's HG 8/9-speed freehub body with a HG 7-speed freehub body and using the right combination of axle spacers could considerably reduce the RH spoke flange offset and get closer to building a zero-offset wheel.
Or perhaps I should rearrange my thinking and ask what/which 135mm OLD hub/s a FH-RM30 freehub body fits.
Again, thanks!