Stage6 in conjunction with the US manufacturer Moto Tassinari, who is famously known for high performing reed valves in the field of motocross engines, has developed the V-Force3 reed valve. The double V-reeds construction is patented and thanks to its huge inlet diameter and an optimized airflow, it provides much better filling of the crankcase. To ensure maximum power output you should fit the 28mm Venturi insert that is included in the package. An evolutionary step-up for 50cc two-stroke automatic engines.