## Complete Cylinder with Head 50.00mm 90cc 13mm Piston Pin NCY Tuning 139QMB/QMA (GY6 50) 4T Boost the power of your 139QMB/QMA (GY6 50) 4T scooter with this complete cylinder and head kit from renowned brand NCY. This high-quality tuning kit offers a 50.00mm cylinder bore and a 13mm piston pin, providing a significant performance increase. ### Durability and Reliability The cast iron cylinder guarantees exceptional strength and wear resistance. Cast iron, as a construction material, is more durable than aluminum and typically allows for re-boring in case of seizure, extending the cylinder's lifespan. ### Increased Capacity for Better Performance The 90cc capacity provides a noticeable increase in power and torque, translating into a more dynamic ride. You will feel the difference both during acceleration and uphill riding. ### Precise Manufacturing NCY is known for the high quality of its products. The complete cylinder with head has been precisely manufactured, guaranteeing a perfect fit and optimal operation. The 13mm piston pin ensures smooth piston movement within the cylinder. ### No EGR System for Maximum Power This cylinder is not equipped with an EGR (Exhaust Gas Recirculation) system. The absence of EGR positively affects engine power, further enhancing your scooter's performance. ### The Ideal Choice for Demanding Riders The NCY complete cylinder and head kit is an excellent choice for those who want to improve the performance of their 139QMB/QMA (GY6 50) 4T scooter. It provides not only increased power but also durability and reliability.