Home › 49cc GY6 Head Gasket Set 49cc GY6 Head Gasket Set 44mm - $ 8.00 39mm - $ 8.00 Head gasket set fits TAOTAO models ATM50-A1, CY50-A, CY50-B, CY50-T3, GT5-50, Thunder 50, New Speed 50, Zummer 50. Includes head gasket and base gasket. Please Specify cylinder size, either 39mm or 44mm Tweet Pin It