My god guys i am pulling 60 - 65 mph from a 300ex with a 76mm 11:1 comp. wiesco piston, DG krome exhaust, clutch kit, dynojet jet kit, and acceleration front sprocket, and 22inch tires.

 

You can get a Curtis Sparks full exhaust from his company. And you can get an oil cooler from fourstroketech.net. As for a cam id prob. go with a web cam or a curtis sparks cam. Hot Cams doesent make a cam for the 300. And if you get a curtis sparks pipe, get an X4, the x6 and up is for motors more over 350 cc's. And like someone mentioned earlier get a heavier duty clutch. I beleive fourstroketech sells these aso. And have the head ported and polished and if you can afford a new carb do that to, and your 300 wil be fast.