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#P5970
Polini twin layer air filter element insert for Gilera Runner, Stalker & Piaggio NRG MC2, MC3.
These Polini filters are made up from two sponge layers:, the blue finer layer has a porosity of 60PP and the black layer has a porosity of 30PP. Also the external of surface is waved which offers a greater entrance of air flow and helps to retain more dirt particles.
You may need to adjust the main jetting.
*Please compare with your old filter.
Polini 203.0129
