Scooter Big Bore Performance Kit, Fits The QMB139/GY6 Based 50cc Four Stroke Chinese Scooter Engines. This is a 50mm Bore, Comes Complete with Cylinder, Piston Set, Gaskets, Complete Head Already Assembled (64mm Valve Length), Performance Air Filter, Performance A 9 cam ,Performance Variator with 6.5 Gram Roller Weights,50cc 20mm  carburetor, #80, #85 ,#90 carb jets for fine tuning your engine Very Nice Performance Taiwan Stainless Steel Exhaust , (64mm) Rocker arms , Performance CDI Box ,Intake spacer , o ring ,Fuel filter , Ignition Coil , Fuel Valve, 2000 rpm torque springs Plus Free Shipping to US addresses, International Shipping Rates do Apply. This is the best Value on a Big Bore Kit Package you will find $249.00. plus Free Shipping to the US. All my Parts are in Stock in the US ready for shipment to you. All parts are shipped from the East Coast so shipping times range from 2 to 5 days.

Be sure and check out my Ebay Store for more great deals on parts for your Chinese Scooter.

 ADD INCLUDES EVERYTHING PICTURED