80cc QMB139 47MM Cylinder Engine Kit with 64mm -EGR Head

80cc QMB139 47MM Cylinder Engine Kit for GY6 80cc Scooters

Upgrade your scooter's performance with this comprehensive 80cc QMB139 47MM Cylinder Engine Kit. Designed for GY6 50cc engines, this kit converts your ride to 80cc, delivering a significant boost in power and acceleration.

• 47mm Piston Diameter: Provides the core increase in displacement for enhanced performance.
• 64mm Valve Length: Optimized valve size contributes to improved airflow and combustion efficiency.
• EGR Style Cylinder Head: Engineered for effective exhaust gas recirculation, promoting cleaner emissions and smoother running.
• Complete Gasket Set Included: Features cylinder head and base gaskets precisely matched to the 47mm bore for a perfect seal.
• 13mm Piston Pin Diameter: Ensures robust connection and durability within the piston assembly.

Compared to standard 50cc GY6 engines, this 80cc big bore kit offers a substantial displacement increase, translating into noticeably more torque and higher top speeds. This upgrade is ideal for riders looking to enhance their scooter's capabilities beyond factory specifications.

Key Technical Advantages: Technology and Performance