GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit for 64mm Valve 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set with 6pin Racing CDI Ignition Coil Performance Spark Plug Clutch Spring

Size:64mm Valve Length Fitment: Jonway 49cc 50cc 4 stroke scooters like warrior 5050cc 4 stroke like Agility 50,People S50 4T,Suer 8 50 4T Pagsta mini 49ccBaja 49cc 50cc 4stroke scooters like motorsports SC-50 sun city,primo,DR50,Dirt Runner 49Baotian BT49QT-2,BT49QT-7,BT49QT-9,BT50QT-9,BT50QT-11 Dotera 50QT-11Eton 49cc 50cc 4stroke like Sport 50Fly 49cc 50cc 4-stroke scootersJalon JL50QT-15,JL50QT-16,JL50QT-18,JL50QT-21,JL50QT-21 Falcon.Jinlun 49cc 50cc 4-stroke scootersRoketa 49cc 50cc 4 stroke scooter such Bahama,Maui,Sicily,Tank,Baotian 50QT-9Sinski XSJ50QT-6, XSJ50QT-BSSR Lazer 5 MopedSunl SL50QT-16, SL50QT-18,SL50QT-2,SL50QT-3Tank 49cc 50cc 4-stroke scootersTaotao 49cc 50cc 4 stroke scooter such as GT5,Fastwind,AMT50-A1,CY50-A,CY50-B,CY50-T3,Funny50,Roman 50,Retro 50,Speedy50,Venus50Verucci VC50TS-3MVIP future champion 4 strokeZhong Hu 50cc,Zongshen Metro 50ccZongshen ZS50QT-4Many more GY6 4-stroke 49cc 50cc 60cc 80cc from china. engine Specifications:Bore: 50mm Displacement:100ccValve Length: 64mmPacakage Included:1 x Set of 6 Gram Racing Pure Copper Roller Weights1 x Cylinder Head with 64mm valve with Update Camshaft.1 x Rocker Arms Assembly 2 x Valve Seals1 x Oil Pump Assy with Driving Gear1 x 50mm Bore Cylinder Block1 x Set of 50mm Piston Assy, Piston, Rings and Wrist Pin1 x Full Set of Engine Gasket1 x Set of Intake Manifold and Muffler Bolts, and Exhaust locking hat1 x 6pins Racing AC CDI1 x Racing Ignition Coil1 x Racing 3-electrode A7TC Spark Plug1 x Set of Clutch Small Racing Spring1 x Racing Clutch Big Spring

• This big cylinder kit will upgrade your gy6 50cc 60cc 80cc to 100cc, without EGR, to get more RPM,more power, faster maximum speed.
• 64mm valve length version
• Easy Installation
• Upgrade engine parts included cylinder body kits, cylinder head kits, camshaft, camshaft seat kits, gaskets kits, oil pump and gear, clutch spring sets, copper roller sets, 6pins racing AC CDI, ignition coil and racing 3-electrode spark plug
• Upgrades parts kits for most of 50cc scooter