## 80cc Cylinder Head - Boost Your Scooter's Power! This complete 47.00mm 80cc cylinder head without EGR for 139QMB/QMA (GY6 50) 4T engines is the perfect solution for those who want to increase the power and performance of their scooter. Made of high-quality aluminum, the head offers durability and reliability, ensuring long-lasting and trouble-free operation. The set includes complete valves, gaskets, and springs, which facilitates assembly and eliminates the need to purchase additional parts. ### Precise Workmanship and Excellent Parameters The cylinder head has been designed for maximum efficiency. The enlarged combustion chamber contributes to better combustion of the fuel-air mixture, which translates into increased power and torque. Precise dimensions and careful workmanship guarantee a perfect fit to the engine. - Intake diameter: 20mm, hole spacing 45mm M6 - Exhaust diameter: 30.5mm, hole spacing 50mm M6 - Intake valve: length 66mm, plug diameter 18.5mm, stem diameter 5mm - Exhaust valve: length 64mm, plug diameter 15.5mm, stem diameter 5mm ### Without EGR - More Power and Simpler Design The cylinder head is designed for engines without an EGR (exhaust gas recirculation) system. Eliminating EGR contributes to improved engine performance and simplifies its design, reducing the risk of failure and facilitating maintenance. ### Ideal Replacement and Upgrade This 80cc cylinder head is an excellent replacement for the original part, as well as a great way to increase engine capacity. It provides a noticeable increase in power and dynamics, which translates into better acceleration and higher top speed. Choose quality and reliability - invest in the 80cc cylinder head and enjoy the full potential of your scooter!