   Original Dellorto top ring nut for SSI 25-30mm "A" model carbs. This new old stock ring nut is for the earlier model "A" model carbs and is shorter than the later type "D" ring nuts. These "A" model carbs are found on lots of 1950's and 60's Italian motorcycles: Moto Guzzi, Parilla, MV, Benelli, Gilera, and earlier model Ducati bevel singles.NOTE: The top cap and ring nut must be a matching set for the wire retainer clip holes to align properly. |