Amazon.com: K&N Motorcycle Air Filter: Clamp On Pod Filters (4 Pack) Chrome Top with 54mm Flange Fits older Motorcycle Models CB, KZ, GS, GPZ, XS Pod Filters RC-0984 , Black : Automotive
K&N RU-5147 Universal Clamp-On Air Filter
Screamin' Eagle Touring High-Flo K&N Heavy Breather Air Filter Element | Harley-Davidson USA