K&N XStream Top Universal Air Filters take performance to the next level with the addition of a filter within the filter's top adding more filter area for higher air flow and a longer service interval. The XStream Air Filter provides awesome air flow and outstanding filtration. When racing, in any environment, racers need all the protection and airflow they can get. K&N delivers. All K&N universal air filters are constructed with ultra-strong moulded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.

Part KNRX-4140 Product Specifications
Product Style: Round Straight Universal Air Filter
Air Filter Shape: Round
Filter Material: Cotton Gauze
Flange Inside Diameter: 3.531 in (90 mm)
Flange Length: 0.719 in (18 mm)
Flanges: 1
Flange Type: Centered
Height: 5.969 in (152 mm)
Outside Diameter: 4 in (102 mm)
Top Material/Finish: None
Top Style: X-Stream
Filter Re-Oiling Amount: 0.54 oz (16 ml)
Footnote 1: Base Has 25/64" Vent

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