weights have a much bigger effect on 2t scooters, buy both or get a few sizes, after my upgrades mine needed 8g to run fast and it took me a while to figure it out since i mostly use 5g for modified 4t 50s, 4g is a little light if those are the 2 to choose from get the 5s
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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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