Hi
the silencer of the Crono is not the same as on the GFR. The outer cover is stainless steel or at least crome plated steel.
The GFR silencer is out of aluminium.
But the dimensions are the same, so you could use both silencers on both bikes.
Front and rera calipers are the same as on the Nordies. So it might be easy to find something.
The rear damper of the GFR is nearly the same as on the SPs. Same dimensions, but the upper fixing bolt is M12 instead of M10 (if im remember right, could also be M10 instead of M8). Don't know if the Crono has the one from the SPs or the GFRs. You might measure the bolt and decide what you need. It's easy to drill in the bigger hole for the bigger bolt
ciao Joachim