The Weber IDF range of downdraft carburettors are highly versatile and have been used in sports cars and Motorsport applications for decades. They are an ideal solution for 'flat' engines such as the VW beetle or Porsche 911 and also Mazda rotary engines.Many sizes and options available making them suitable for most applicationsDowndraft configuration ideal for boxer 'flat' engines or rotaryTwin barrel with synchronous opening for maximum performanceThe Weber IDF carburettors are supplied with a standard set of jets and chokes which may need to be changed depending on the application. A full range of jet and choke sizes are available to buy separately.Available with or without a cold start mechanism (starter).