The dust, sand and impurities that this filter catches are the number one enemies of such vital components as the pistons, cylinders and valves, to name but a few. Promoting maximum air intake, Tecnium air filters are sure to catch all foreign bodies from reaching your engine throughout the entire race. A first aerated foam layer catches impuritiesA denser second foam layer catches any smaller impurities and favours the air flowFlame retardant foam (uniquely for 4-stroke competition engines in case of flame return)The breathable gasket guarantees maximum contact with the body of the filter casing Filter version:Standard