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#P2634
50cc wheel 4-stroke GY6 139QMA/QMB engine found in most 4-stroke Chinese, Peugeot, Kymco & Sym Euro2/3 scooters.
This engine is suitable for models that use the short drive shaft (single shocker on the back not twin shockers). The engine is supplied with full variator/ transmission/ clutch/ belt system.
These engine come complete with flywheel/ stator assemblies which are compatible with virtually all Chinese scooters but for some scooters e.g. Peugeot V-Clic you may need to use your old flywheel and stator.
Long engine type for 12 inch wheels
*Please compare with your old engine and check if the engine number contains 139QMA/QMB- contact us if unsure!
This engine is not a direct replacement for Euro4/5 engines.
Hi, the engines are not restricted in any way however your bike may have a restricted cdi (ignition) system as standard. If this was the case you would need to swap the cdi for an unrestricted one. So basically if your bike is currently unrestricted it still will be after fitting this engine.
Top speed on a 50cc 4-stroke moped will be about 38mph. There are not really any 4-stroke 50cc mopeds which will exceed this without significant modification despite what other manufacturers may claim.
