Hoca QMB139 Roller Weights, Part #169-149 -
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Hoca QMB139 Roller Weights, Part #169-149

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Hoca Roller Weights for 50cc 4-stroke QMB139 engines. The QMB139 is the most popular 50cc 4-stroke engine found on Chinese scooters .We recommend starting performance upgrades by changing the variator roller weights first. Heavier roller weights = A slower take off speed with more acceleration and a higher top speed. Lighter roller weights = A faster take off speed with less acceleration and lower top speed. Size: 16x13.

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