K&N Engineering RU-1720 Universal Round Straight Air Filter - Rubber End Cap exhaust-full-system-exhaust 2009 Polaris Ranger RZR 800

2009 Polaris Ranger RZR 800 S

A new compound helps provide longer life and stronger grip performance

1999-2005 Harley Davidson FXSTB Night Train

1987-1990 Harley Davidson FXLR Low Rider Custom

2007-2013 Yamaha YFM700R Raptor SE

K&N Engineering RU-1720 Universal Round Straight Air Filter - Rubber End Cap exhaust-full-system-exhaust 2009 Polaris Ranger RZR 80020deg. 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