Main Jet Set Polini Dell'Orto 5mm

When you buy a new carburetor or upgrade your engine, the jetting will in most cases not fit the actual set-up of your bike, and you won't get the maximum performance out of your engine. Jet sets with jets in different sizes let you play around with jet size until you find the optimum fuel-air ratio for maximum power and efficency. This Main Jet Set Polini with 5mm Dell'Orto type jets will help you with finding the best mixture for your engine and set-up.