K&N Engineering RU-1720 Universal Round Straight Air Filter - Rubber End Cap security-covers-vehicle-covers 2004-2008 Husaberg FE650E

2004-2008 Husaberg FE650E

2009-2010 Polaris Outlaw 450 MXR

2017-2019 Yamaha WR450F

information printed on each box

K&N Engineering RU-1720 Universal Round Straight Air Filter - Rubber End Cap security-covers-vehicle-covers 2004-2008 Husaberg FE650E20deg. Angle. 2 1 4in. ID x 3 1 2in. OD x 6in. L. When selecting one of K&Ns universal round straight air filters, you should consider the following dimensions as they relate to the specification chart:. Mounting Flange Inside Diameter This is the most critical dimension and should be very close to the diameter of the applications inlet flange. The flange will stretch up to 1 8in. for those in between sizes. Filter Diameter This is the overall