none of them do, after the big bore kit you should run 16 to 1 for 1 tank, so ad 4 ounces of oil to a gallon of gas and put that in the tank
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2012 Jonway X
44mm Hoca crank
52mm Hoca big bore
MMS big valve head raised ports, polished, milled .023
Hoca 26mm carb
NCY titanium valve springs
NOS wet nitrous system
Holley fuel pump
MMS variator
Naraku CDI
HT coil
4' Wheelie bar
MMG stainless slip-on exhaust
NGK "11" spark plug
UNI filter
2014 Icebear Maddog
too much to list
http://mmsscooters.com
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