K&N Universal X-Stream Clamp-On Air Filter RX-4040-1

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 molded 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.

Pleated filter built in top
Washable and reusable
Low restriction
Clamp-on design

Product Specifications:

Air Filter Shape Round
Base Outside Diameter 4 in (102 mm)
Filter Material Cotton Gauze
Filter Re-Oiling Amount 0.62 oz (18 ml)
Flange Inside Diameter 2.438 in (62 mm)
Flange Length 0.75 in (19 mm)
Flange Type Centered
Flanges 1
Footnote 1 1/4-20 Jack Nut Into Top
Footnote 2 Base Has 25/64" Vent
Height 4.75 in (121 mm)
Outside Diameter 4 in (102 mm)
Package Contents 1 Air Filter