300ex jetting ?

[400exrapes]

My friend has a stock 300ex with an hmf slip on pipe. We want to take off the lid and rejet it accordingly. We're about 100-300 feet above sea level, about 80 degrees average. Help me out with a main jet range please.

[honda300EXtreme]

i dont know if your still wondering but

with that set-up it would be anywhere from a 125k to a 128k main,, pick of both and start with the 125 and you should be about spot-on

[400exrapes]

haha yeah it was a 125, we havent put it in yet but enough research determined that.. thanks.