Diaphragm Block -TOP PERFORMANCES- VForce - Minarelli AM6, Derbi D50B0/D50B1 - Aprilia MX50, RS50, RS4, RX50, SX50, Tuono50, Derbi Senda50, GPR50, Peugeot XPS50, XR6, XR7, Rieju RS2, Yamaha DT50, TRZ50 - Vespa Large Frame (Malossi), Small Frame (Malossi)

Reed valve - TOP PERFORMANCES - Tassinari - Minarelli AM3-6, Derbi D50B0.

With this reed valve, Top Performances now also offers a VForce 4-valve diaphragm.
It was developed and patented by Moto Tassinari.
The significantly enlarged intake port results in much better port filling.
This directly leads to a noticeable increase in power.
The engine responds more aggressively to the throttle.
Every twist of the throttle is immediately converted into forward thrust.