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A standard Chinese made BBK 100 (83cc) upgrade does not need a bigger carb or performance exhaust. In those areas, all it needs is a properly jetted oem carb.
The so called performance CDI modules (blue & orange) and ignition coils are a waste of money and those CDIs can cause damages from over advancing timing at crank time.
Too heavy of Engine Variator rollers will cause belt engagement at idle and can cause clutch and belt failure if the driver has to hold it back when stopped @ traffic lights.
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