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-4040-1 Product Specifications
Product Style: Round Straight Universal Air Filter
Air Filter Shape: Round
Filter Material: Cotton Gauze
Flange Inside Diameter: 2.438 in (62 mm)
Flange Length: 0.75 in (19 mm)
Flanges: 1
Flange Type: Centered
Height: 4.75 in (121 mm)
Outside Diameter: 4 in (102 mm)
Top Material/Finish: None
Top Style: X-Stream
Base Outside Diameter: 4 in (102 mm)
Filter Re-Oiling Amount: 0.62 oz (18 ml)
Footnote 1: 1/4-20 Jack Nut Inserted Into Filter Top
Footnote 2: Base Has 25/64" Vent

Product Reviews for KNRX-4040-1 - K&N