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The rocker arm assembly for Type 1 QMB139 engines.Type 1 has a shorter head and 64mm valve stem length.If you have 69mm valve stem length and a taller head, you have the Type 2 engine.chances are your scooter is newer and/or was made by Zhejiang ZhongNeng aka Znen.


Rocker Arm Assembly (Type 1, 64mm); QMB139 $18.99

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