VForce3 reed block Yamaha / Minarelli

OK for racing! Designed in Italy for German parts legend Stage 6. Tassinari is an Italian Motocross manufacturer used to extracting max power from 2 stroke engines. This revolutionary VForce3 is a patented double V reed valve system with no less than 8 carbon fibre petals. This practically doubles the inlet area, which gets increased crankcase filling at all RPM for more response and power! Get the max out of your power potential, for standard or heavily tuned scooters. Comes with stuffer for added high RPM efficiency and flow smoothing. To suit: Adly Silver Fox SF-50, Gatecrasher GTC-50 Yamaha Jog (horizontal 2 stroke, including 3KJ, 3YJ, 3YK, Z, Super Jog, Poche, Aprio, ZR etc. Does not suit CV50) Yamaha Vino (all 2 stroke with 3KJ engine) Keeway Venus, Matrix, Flash / Vmoto Milan, Monza etc Urban, Urban R4 And many other Yamaha / Minarelli engines which means basically all horizontal 2 stroke 50cc and 90cc from Taiwan and China, plus the above. Does not suit Honda engines. It can be fitted to Street Magic 50/110 but one of the four bolts does not line up.