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Piston Kit for GY6 50 139QMB Engines
Pistons are Naraku brands and Stock brands as well as Kymco, SYM, Jonway, Tomos and others
Let us know what cylinder kit you have and we can help with best match.
They do not work in kits other sites claim are 80 85 or 100cc period. Please choose wisely by simply measuring your piston you have now.
Size 39mm-Stock 47mm-70cc 50mm-80cc 52mm-85cc
48 Lower States Only