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GOOFIT Big Bore Cylinder Rebuild Kit for GY6 50cc 139QMB Racing Scooter Parts 64mm Valve
$59.99
- Valve Length 64mm,does not for 69mm one.
- It can be only used for gy6 4stroke 49cc 50cc engine upgrade.best way to get more rpm,maximum upgrade kit for gy6 50cc 139qmb engine and 1p39qmb engine.
- All metal components in the kit are crafted from premium materials,offering exceptional wear resistance and high-temperature tolerance.
- The core components within the kit undergo precision machining to ensure stable performance under demanding high-speed,high-pressure operating conditions.
- This enhances power output while optimizing fuel combustion efficiency,resulting in smoother engine operation and quicker response times. simultaneously,it reduces overheating risks,comprehensively improving engine reliability and durability.