K&N Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, snowmobiles, motorcycles, ATVs, scooters, UTVs, Custom Choppers, Metric Cruisers and other applications Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment The air filters are designed to perform They will increase power over stock filters They utilize a washable and reusable pleated material Ultra strong molded pliable rubber flanges absorb vibration while the clamps and rubber allow for a secure attachment The filter openings can be streched up to 1/16" to fit in-between sizes Air Filter Shape Round Filter Material Cotton Gauze Filter Re-Oiling Amount 0.67 oz (20 ml) Flange Angle 10 degrees Flange Inside Diameter 2.75 in (70 mm) Flange Length 1 in (25 mm) Flange Type Angled Flanges 1 Height 6 in (152 mm)