Engine: 50-100cc, 2 stroke Application: Motorcycles Venturi diam.: 15 - 16 - 17 - 17,5 - 18 - 19 - 19,5 - 20 - 21mm Features: Piston type throttle valve Indipendent electric or manual starting circuit Idling system with jet and air adjusting screw Main circuit with mechanical mixture adjustment by means of conical needle Either Ø 29 elastic fitting connection Air intake connection Ø 39,5