Spaco 13.13 SHA carburetor. Fits Vespa SI, Grillo, Citta and Kinetic mopeds with this style top. Can also be used on Ciao, Bravo, and Grande. Excellent upgrade for stock and larger bore cylinders. Comes with a 43 main jet.
**43 jet is too small , you must upjet!
**It is best to pick up a range of jets to tune for your application, link below.
Intake ID = 16mm
Air filter= 50mm