I have a 03 650 prairie and was thinking of spinning some wrenches on the thing.If some of you fellow gearheads want to give up a few secrets on the best bang for my buck feel free to let me have it.The thing is all stock except for the 26 589's.

 

I would get the dg holeshot module , that would probably be your"best bang for the buck" mod. Ill be getting one soon myself

 

hey Hollywood, a stk650 with a Dalton Clutch kit and jetted perfectly makes high 20's rwhp on my dyno, we build 650's with up to 46rwhp so far. The sky is the limit with that little V twin. See dyno sheet in my pics. sorry for the poor quality, I have a better one that I will upload.
Ray