44MM QMB139 Big Bore Engine Kit

Elevate your scooter's performance with this comprehensive 44mm Big Bore Engine Kit, specifically designed for QMB139 engines. This kit includes a high-performance cylinder head featuring a 64mm valve, engineered to maximize power output and airflow for a noticeable performance upgrade.

• 44mm Piston Diameter ensures increased displacement for greater power and torque.
• 64mm Valve Size on the cylinder head promotes superior airflow and combustion efficiency.
• EGR/PAIR Style Head designed for optimal exhaust gas recirculation or secondary air injection compatibility.
• Robust Cylinder Construction built to withstand the demands of a bigger bore setup.
• Complete Kit Components include essential parts for a seamless engine enhancement project.

Compared to standard 50cc QMB139 engines, this 44mm big bore kit offers a significant increase in displacement and power potential. It's engineered for riders seeking a substantial performance boost without a complete engine swap, providing a noticeable improvement in acceleration and top speed.

Key Technical Advantages: Technology and Performance

This big bore kit is precision-engineered to enhance your QMB139 engine's capabilities. The 44mm bore cylinder, paired with the 64mm valve cylinder head, allows for a greater volume of air and fuel mixture to enter the combustion chamber, leading to more powerful explosions and increased horsepower. The EGR/PAIR compatibility ensures it integrates with emissions systems where applicable, offering a balance of performance and compliance. This kit represents a significant step up in engine tuning, delivering a more exhilarating riding experience.