V-Force 4 Reed Valve Membrane

New V-Force 4! The obvious choice for those seeking maximum increase in air flow, horsepower and increased power through the entire registry.

The new V-Force 4 system Moto Tassinari is developed with a completely new and more aerodynamic design compared to its predecessor V-Force 3

V-Force 4 has a pre-shaped reed diaphragm for better sealing, wider membranes basket for maximum airflow and a 10.5% larger membrane area for further increased airflow than before. The so-called Airfoil technology is used for increased air speed from the valves. V-Force 4 is the most well-developed reed