H, you can run the stock,but you need to modify it. i bet his is to! drill it out for more flow. i took mine apart and drilled it out turned the **** over and now you have the reserver hole flowing to.with the bigger fuel line you get plenty of fuel.WHEN YOU RUN OUT OF FUEL YOU BURN THE MOTOR.you dont want the bowl to run dry.thats why you want more gas. the gas is what keep the motor cool.

 

pimp.
your petcock is in the mail. i found a nos jet today . ill drop it in the mail to! james

 

Mean650, my petcock isn't drilled cause I haven't had an issue with it not supplying enough fuel --- yet.

 

Yea dont use cheap fuel. Run atleast 104, but I wouldnt go any more the 112. I really like the track tech 111. I have always ran it in my cars also. BOM is right to about the limit of the stock piston. 20 is safe. I have ran up to 30 on the stock piston and it stayed together, but I wouldnt risk it. Give it 20 and you wont know what bike your even on!!