carburetor POLINI CP D.21 21mm knob choke

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