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Cylinder kit and head for 139QMB engine (39mm) 50cc

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Part Number: 17
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This is a complete top end kit for 50cc Chinese scooters with the 139QMB engine. The cylinder kit includes, cylinder, piston, rings, wrist pin and gaskets. The head has preinstalled valves in either 64mm or 69mm size and you can choose EGR or non EGR style.
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