The ProRam range of universal air filters from RamAir feature a pleated synthetic nanofibre filtration media for maximum surface area and increased filtration. This allows for higher air flow with excellent dust and dirt filtration to protect your engine. The top cap of the filter includes an inverted cone to increase the intake area and the base has a rubber polymer neck for fitting to a MAF sensor or rigid intake pipe.Pleated filtration media for maximum airflow and dust / dirt retentionInverted cone end cap provides increased airflowRubber polymer neck to clamp to a MAF sensor or rigid intake pipeRamAir ProRam universal rubber neck cone air filters are available in a range of neck sizes including a 'Universal' fitment which comes with various neck inserts in sizes 70mm, 76mm, 80mm and 90mm internal diameter,Dimensions (excludes 100mm and 127mm neck diameters) : 150mm Base Diameter, 120mm Top Diameter, 160mm high.Dimensions (127mm neck diameter only): 160mm Base Diameter, 125mm Top Diameter, 185mm highDimensions (100mm neck diameter only): 150mm Base Diameter, 120mm Top Diameter, 305mm high.