rite im rebuildig a another engine so far it has apartly a gearup kit not sure which one im guessing it is a secdorany one standard crank in it sport clutch standard carb 50cc molassii sport clylider kit with single ring piston polini varitor so what sort of jet will i need and what size rollers will i need i dont mind buying a few jets and rollers just want a rough idea of what ones i will need many thank liam
all bikes are different when it comes to tuning, id start off with 4 gram rollers and go from there. As for jetting take the old one out it will have a number on it (for example if its a 65 jump it to a 75 ect ect
