80cc QMB139 47MM Cylinder Engine Kit with 64mm -EGR Head

GY6 50CC 47mm QMB139 Big Bore cylinder Engine kit with Cylinder,Cylinder Head piston kit, head gasket, base gaskets.

QMB139 47mm Piston Kit 

•  Piston Diameter: 47mm
•  Piston Pin Diameter: 13mm
•  Piston Pin Length: 38mm

Cylinder Head Gasket 

• 47mm Inside Diameter

Cylinder Gasket GY6 50cc

• Bore: 47mm

Cylinder for GY6 50cc engine

• * Bore: 47mm 

Cylinder Head

•  EGR Style Cylinder Head
•  47mm Bore
•  Valve Length: 64mm
•  Overall Height: 59.5mm
•  Intake Port Diameter: 17mm
•  Exhaust Port Diameter: 18mm
•  Exhaust Bolt Hole Spacing: 49.75mm
•  Intake Bolt Hole Spacing: 44.75mm