Top End Gaskets for Chinese GY6 50cc Engines 39MMBelt Drive or CVT style engine 50cc. Common 4 stroke engine in scooters and mopeds. Easily identified by the large belt housing on left side of engine. IMPORTANT SHOP NOTES: We are aware of some Chinese Scooters that may claim a 50cc engine size but are actually a 60cc engine with a 44mm bore size. These WILL NOT FIT A 60cc ENGINE! 39MM ONLY!
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