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stock cam vs a9 (139qmb gy6 50cc)

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I don't know the specs but here is a visual representation of the difference between stock and a9 cam for 139qmb gy6 50cc

scooter modifications, big bore kits for gy6 139qmb 50cc
znen, chinese scooter, moped, taotao, ruckus, chickus, bbk for scooters

posted by trassar1l


Installing Camshaft/Rocker Arm Assembly
Installing Camshaft/Rocker Arm Assembly
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How to Install Final Drive Gear Up Kit on 139QMB 50cc Maddog or any Scooter
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high lift cam (a9) for 139qmb gy6 50cc
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