K&N Engineering RU-0800 Universal Round Straight Air Filter - Rubber End Cap helmets-helmet-accessories-replacement-parts-breath-guards 2008-2015 Harley Davidson FLSTN Softail

2008-2015 Harley Davidson FLSTN Softail Deluxe

2015-2016 Harley Davidson FLHTK Ultra Limited

2003-2006 Ducati 999

Made from heat treated tool steel

Extremely lightweight

K&N Engineering RU-0800 Universal Round Straight Air Filter - Rubber End Cap helmets-helmet-accessories-replacement-parts-breath-guards 2008-2015 Harley Davidson FLSTN SoftailMounting Flange Inside Diameter 2 7 16in. MM 62, Filter Outside Diameter 3 1 2in. MM 89, Filter Length 4in. MM 102, Flange Length 5 8in. Flange Type Centered. 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.