carburetor Polini CP D.21 21mm knob choke

21mm tuning carburettorfrom Polini. Ideal for 50-70cc high performance 70cc racing scooters, mopeds or geared bikes. The 21mm inlet meet competition regulations for the race track. Very easy to tune and thus a universal fit. Equipped with button-choke with option for cable choke conversion. We offer the full range of spares and replacement items for this carb. Connection diameter intake manifold: 25.5mm connection diameter. Air filter: 46mm. Main Jet: 100. Idle jet: 40. Needle: 14/22