Engine: 50-300cc, 2-4 stroke Application: Motorcycles Venturi diam.: 20 - 22 - 24 - 25 - 26mm Features: Piston-type throttle valve Indipendent starting circuit Idling system with jet and mixture adjusting screw Main circuit with mechanical mixture adjustment by conical needle Versions of mixture adjusting screw on the right and/or on the left Versions with mechanically-operated diaphragm acceleration pump Sleeve connection with insulating reducing socket from Ø 31.75 to Ø 28.57 and Ø 31 elastic fitting connection Air intake connection Ø 38 or Ø M38 x 1.25 for trumpet or joint assembly Material: Die-cast Zamac body