I'd like to get my MC21 NSR to make roughly 70hp, somewhat reliably. I'm currently making 60hp to the wheels with most of the standard mods (I probably would make a little more, but i'm running 112 leaded fuel for safety and it's lack of ethanol as ethanal free unleaded race fuel is basically unobtainable here in CA). I'm willing to go to the next level of performance, whatever it takes, so long as I don't have to rebuild the motor every few track days. How are you guys getting these high hp figures out of your bikes? I'm pretty sure it's time to find the porting master now!!

Michael
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1993 NSR MC21 SE 1990 NSR MC21 SP