K&N X-Stream Universal Clamp On Filter Fits 3 in (76 mm) KNRX-3990-1

8.688 in (221 mm) H x 6 in (152 mm) Base OD x 4 in (102 mm) Top OD - KNRX-3990-1

KNRX-3990-1

RX-3990-1

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 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-3990-1 Product Specifications Product Style: Round Tapered Universal Air Filter Air Filter Shape: Round Tapered Base OutsideDiameter: 6 in (152 mm) Top Outside Diameter: 4 in (102 mm) Flanges: 1 Flange Inside Diameter: 3 in (76 mm) Flange Length: 0.938 in (24 mm) Flange Type: Centered Height: 8.688 in (221 mm) Filter Material: Cotton Gauze Top Style: X-Stream Top Material/Finish: None Filter Re-Oiling Amount: 1.5 oz (44 ml) Footnote 1: 1/4-20 Jack Nut Inserted Into Filter Top