• Chinese Scooter Parts, Chinese Scooter Big Bore Kit, Chinese Scooter Racing Parts
• Chinese Scooter GY6 Big Bore Kit 50mm Bore 100cc
• Fits Chinese Scooter 4 Stroke Engines 139QMB & 1P39QMB 
• If you are looking to get the most out of your 50cc Scooter then here's the kit for You
• Performance Racing Big Bore Kit, Free Shipping From the USA
• Kit Includes 50mm Big Bore Cylinder Kit With Fully Assembled Head
• Head is Completely Assembled Ready to Install 64mm Valve Length With Matching Rocker Arms 
• (69mm Valve Length Also Available)
• Gold Performance Exhaust System,
• KEI HIN Carburetor with Removable Bowl (This is Not a Sealed Carburetor)
• Performance Cam, Racing CDI 
• 50mm Piston Set With Piston Rings, Wrist Pin & Clips
• Complete Gasket Set, New Oil Pump & Drive Gear, New Roller Weights
• Includes New Intake & Exhaust Studs with Nuts
• New Rocker Arms to Match the 64mm Valve Head
• Also Includes a Big Bore Main Jet Kit "Which is a must when going to a Bigger Bore."
• Be sure & Visit my Ebay store & Check out our Big Valve Head Power Performance Packs  

This is one of the best upgrades you can do to your 50cc Scooter,

More Power & Top Speed,          

Stop riding the White Line at 35 buy a Big Bore Kit Today!!!!

Be sure and visit my Ebay Store for more Performance Big Bore Kits, Performance Parts, Performance CDI Boxes, Performance Coils, Performance Exhaust Systems & More.