All 64mm in take K&N 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" (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable and come pre oiled.

K&N Pod Filter - RU-4950 Specifications
Base Outside Diameter: 6 in (152 mm)
Flange Inside Diameter: 2.5 in (64 mm)
Flange Length: 2 in (51 mm)
Flange Type: Centered
Height: 5.5 in (140 mm)
Top Outside Diameter: 5 in (127 mm)
Top Style: Rubber
Top Material/Finish: None
Filter Material: Cotton Gauze
Flanges: 1
Filter Re-Oiling Amount: 1.06 oz (31 ml)
Weight: 1.3 lb (0.6 kg)