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Local dealer was trying to convince me to go to 103 cu. in. upgrade since they have a special on it for $2700. When I told him that I didn't see the point, he tried to convince me by saying that they just finished one and it ran on the Dyno today. HP jumped from a Stock 70 to 90 with the bigger motor. Therefore I suppose 70 is the correct figure, if a dealer can be trusted.
I don't think my 2007 103 puts that much HP out, even with the SERT! Also, I think (and I am not sure of thisidea) that the published torque is on the motor with the dyno hooked to the motor not via the back tire on the dyno. In cars, this can be a pretty bigdifference...don't know about m/c's.