These universal cone shaped air filters from RamAir use a twin layer foam filtration element to provide optimal filtration while allowing for maximum air flow. the foam is internally supported by a T304 grade stainless steel cage to ensure the filter stays in shape. The filter base and neck are constructed from spun aluminium so it is ideal for fitting to a rubber or silicone intake hose.Ideal for Motorsport use or for bespoke intake systemsHigh air flow for maximum engine performanceExcellent dust / dirt filtrationSpun alloy neck allows fitment to rubber or silicone intake hosesThe RamAir universal alloy neck cone air filters are available in a range of sizes:Medium Cone: 130mm high, 150mm base diameter, 130mm top diameterLarge Cone: 160mm high, 175mm base diameter, 120mm top diameterXL Cone: 160mm high, 200mm base diameter, 150mm top diameterAll filter sizes have a 60mm long neck.