Vespa Dellorto SI 20.15-17 A-D/20.20-26.26E Carburettor Main Jet Set Pack (105-128) NumberPlate 0 mm thick rise bar

0 mm thick rise bar

It should operate at low and real-world usable rpm

The digital display

Conclusion: High end cylinder kit

customers say in some cases the 558132 listed seperately may be more suitable

Vespa Dellorto SI 20.15-17 A-D/20.20-26.26E Carburettor Main Jet Set Pack (105-128) NumberPlate 0 mm thick rise barVespa 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