Quote:
Originally Posted by drillpvt
I have moded the stock pipe , Sorry i should have posted that . It is a howit gy6 , next is the 39t sprocket , then Cam upgrade then carb. alot of people have told me the 30 to 32 mil pumper carbs wont do to much with out a better Cam . Never done a cam before so it will be intresting ! but im only doning that on one of the Crossfires ! I am looking for a good used 250cc on craiglist and online to throw into the other one.
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Im wondering how you modified the stock exhaust pipe.