DROWsports Stealth Universal Cone Air Filter - 49-50mm
50MM 2 Stage Air Filter – Bart Moto Co
BGM ultra flat air filter: 50mm
Amazon.com: Evermotor 48mm 49mm 50mm Universal Double Layer Steel Air Filter for Motorcycle Scooter ATV Moped Red : Automotive
Black & Red Oval Pod Filter - 50mm - Honda CB/CL350/360/450 CB500T
UNI Air Filter - 50mm (Honda CB350/450) – Cycle Refinery
Amazon.com: 2PCS Motorcycle Air Filter Universal 50MM Replacement Engine Filter Dirt Bike High Performance Air Filters Fit Motocross Carburetor Cleaner for Pit Bike Scooter Moped YAMAHA HONDA SUZUKI KAWASAKI ATV : Automotive