My brother in law ran either a 14/21 or 15/22 on a stock Kawasaki 1100 swapped blaster. Of course mods determine final pitch numbers. Not sure on the Yamaha 1100. Pretty sure they make power different than the Kawasaki does?
I have some stock Yamaha 1100 stuff but looks like your out of the US shipping would be the killer.
The kaw 1100 makes more hp 130 vs the Yamaha 110. I think the gp1200 nonpv makes 135
My buddy may be getting rid of a half girdled (riva I think) head that uses the stock upper shell. I think its 170psi. I can ask him what he wants for it if you are interested.
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