GY6 Cylinder Rebuild Kits for 49CC 50CC 139QMB Moped Scooter Engine

The 64mm Valve Length Fitment is designed for Jonway 49cc 50cc 4-stroke scooters, such as Warrior 50, Agility 50, People S50 4T, and Suer 8 50 4T. It is also compatible with Pagsta mini 49cc, Baja 49cc 50cc 4-stroke scooters, including Motorsports SC-50, Sun City, Primo, DR50, and Dirt Runner 49. Furthermore, it fits Baotian BT49QT-2, BT49QT-7, BT49QT-9, BT50QT-9, BT50QT-11, and Dotera 50QT-11 models, as well as Eton 49cc 50cc 4-stroke scooters like Sport 50, and Fly 49cc 50cc 4-stroke scooters.

The fitment also includes Jalon JL50QT-15, JL50QT-16, JL50QT-18, JL50QT-21, and JL50QT-21 Falcon models, Jinlun 49cc 50cc 4-stroke scooters, Roketa 49cc 50cc 4-stroke scooters such as Bahama, Maui, Sicily, and Tank, Baotian 50QT-9, Sinski XSJ50QT-6, XSJ50QT-BSSR, Lazer 5 Moped, Sunl SL50QT-16, SL50QT-18, SL50QT-2, and SL50QT-3, as well as Tank 49cc 50cc 4-stroke scooters.

Additionally, the fitment covers Taotao 49cc 50cc 4-stroke scooters, including GT5, Fastwind, AMT50-A1, CY50-A, CY50-B, CY50-T3, Funny50, Roman 50, Retro 50, Speedy50, and Venus50. It is also compatible with Verucci VC50TS-3M, VIP future champion 4-stroke, Zhong Hu 50cc, Zongshen Metro 50cc, and Zongshen ZS50QT-4 models.

The engine specifications include a Bore of 50mm, Displacement of 100cc, and a Valve Length of 64mm. The package includes a set of 6 Gram Racing Pure Copper Roller Weights, a Cylinder Head with 64mm valve and an Updated Camshaft, a Rocker Arms Assembly, 2 Valve Seals, an Oil Pump Assembly with Driving Gear, a 50mm Bore Cylinder Block, a set of 50mm Piston Assembly (Piston, Rings, and Wrist Pin), a Full Set of Engine Gaskets, a Set of Intake Manifold and Muffler Bolts, and an Exhaust locking hat, a 6-pin Racing AC CDI, a Racing Ignition Coil, a Racing 3-electrode A7TC Spark Plug, a Set of Clutch Small Racing Spring, and a Racing Clutch Big Spring.

This big cylinder kit is designed to upgrade your GY6 50cc, 60cc, or 80cc engine to 100cc, without EGR, to provide more RPM, more power, and a faster maximum speed. The 64mm valve length version is easy to install and includes all the necessary upgrade parts.

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