K&N Filters - XStream Universal Air Filter P/N RX-4140
Features: Pleated Filter Built In TopWashable And ReusableLow RestrictionClamp On Design
Round Straight - OD-4 in. - Flange L-0.75 in. - Inside Flange 3.5 in. - Centered - Custom End Cap - Filter Length 5.75 in. - Base Has 25/64 in. Vent
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.