Fake V Force 4 Reed Manufacturer Part Number V31407943, V3140-794-3. PLEASE READ BEFORE PLACING AN ORDER. Moto tassinari vforce3 reed valve system for yamaha triple models v3140-794-3 f you simply have a change of heart for any reason, yes, you can return the part (unless it is a tuner). Please read the description and check the part number and fitment chart BEFORE checking out.