RUTU 69mm Valve GY6 Big Bore Kit 100cc,with 6pin Racing CDI Ignition Coil,Compatible with Big Bore Kit for 49cc, 50cc & 139QMB Scooter Engines - 50mm Cylinder Block, 90cc, Boosts HP & Speed 5-10mph

Valve Length: 69mm

Application
Baja 49cc 50cc 4stroke scooters like motorsports SC-50 sun city,primo,DR50,Dirt Runner 49
Biaotian BT49QT-2,BT49QT-7,BT49QT-9,BT50QT-9,BT50QT-11 Dotera 50QT-11
Eton 49cc 50cc 4stroke like Sport 50
Fly 49cc 50cc 4-stroke scooters
Jalon JL50QT-15,JL50QT-16,JL50QT-18,JL50QT-21,JL50QT-21 Falcon
Jinlun 49cc 50cc 4-stroke scooters
Jonway 49cc 50cc 4 stroke scooters like warrior 50
Kymco 50cc 4 stroke like Agility 50,People S50 4T,Suer 8 50 4T
Pagsta mini 49cc
Roketa 49cc 50cc 4 stroke scooter such Bahama,Maui,Sicily,Tank,Baotian 50QT-9
Sinski XSJ50QT-6, XSJ50QT-B
SSR Lazer 5 Moped
Sunl SL50QT-16, SL50QT-18,SL50QT-2,SL50QT-3
Tank 49cc 50cc 4-stroke scooters
Taotao 49cc 50cc 4 stroke scooter such as GT5,Fastwind,AMT50-A1,CY50-A,CY50-B,CY50-T3,Funny50,Roman 50,Retro 50,Speedy50,Venus50 Verucci VC50TS-3M
VIP future champion 4 stroke
Zhong Hu 50cc,Zongshen Metro 50cc
Zongshen ZS50QT-4
and many more GY6 4-stroke 49cc 50cc 60cc 80cc 139qma and 139qmb engine

Specifications:
Bore: 50mm
Displacement:100cc
Pacakage Included:
1 x Cylinder Head with 69mm valve, WITHOUT camshaft, you have to use your stock one.
2 x Rocker Arms for 69mm Valves
1 x Oil Pump Assy with Driving Gear
1 x 50mm Bore Cylinder Block
1 x Set of 50mm Piston Assy, Piston, Rings and Wrist Pin
1 x Full Set of Engine Gasket
1 x Set of Intake Manifold and Muffler Bolts
1 x Set of 4 Gram Racing Roller Weights
1 x Set of 5 Gram Racing Roller Weights
1 x Racing AC CDI
1 x Racing Ignition Coil
2 x Racing 3-electrode A7TC Spark Plugs