by hall_philip » Thu Aug 14, 2014 5:45 pm
I am currently running an 08 R head with 08 R cam, KW steel valves, vertex R piston, open airbox, power core 4 silencer, and power bomb head pipe. next rebuild will include a big bore to get some bottom end power back, I find myself beating up my clutch, as that will also be getting changed out for a rekluse core exp 3.0 unit. As she sits now, good power on the top end, lacks in the bottom. still a fast bike, if your really looking for that much more power get a 450. I ride similar conditions and for me the 250 is the way to go.
also your better off porting the R head than the x head.