K&N RU-1770 Universal Reusable Cotton w/ Rubber 3.75" Dia. Round Air Filter

K&N RU-1760 Universal Clamp-On Air Filter

K&N RU-3130 Universal Clamp-On 4.625" Base Dia. Round Tapered Cotton Air Filter

K&N HighFlow Original Lifetime Universal ClampOn Air Filter Performance, Prem...

K&N Universal Reusable 7.5" Dia Round Tapered Cotton Gauze Clamp-On Air Filter

K&N RU-4410 Universal Reusable Clamp-On 4.625" Base Dia Round Tapered Air Filter

K&N E-3730 Universal High Flow Reusable Red Cotton 14" Dia. Round Air Filter

K&N Universal Red Centered Flanged 4" Dia Round Straight Cotton Gauze Air Filter