Vespa Dellorto SI 20.15-17 A-D/20.20-26.26E Carburettor Main Jet Set Pack (105-128) NumberPlate The digital display

The digital display

Scomadi TL125

0 mm thick rise bar

Vespa - Headset Top - PX / EFL / T5 Classic

Vespa Dellorto SI 20.15-17 A-D/20.20-26.26E Carburettor Main Jet Set Pack (105-128) NumberPlate The digital displayVespa Dellorto SI 20. 15 17 A D 20. 20 26. 26E Carburettor Main Jet Set Pack (105 128) In the SI carburettor, the main jet is located in the jet block under the mixer tube and main air correction jet. It is responsible for making a certain amount of petrol available for premixing. With all tuning measures, no matter how small, it is necessary for the main jets to be raised, as they mainly impact on the middle and upper rev range. Their effect is