35mm Air Filter for 50cc 70cc 90cc 110cc ATVs Dirt Bikes Go Karts Quad 4 Wheeler Pit Bike 35mm Air Filter. Top Quality Guaranteed. Compatible with 19mm caliber of Pull Carburetor with Hand/Cable Choke It may fit Honda XR50 CRF50 and most Chinese 50cc-110cc ATV, Dirt Bike and Go Karts with Horizontal Engine. please check pictures and specifications for compatibility Flange Diameter: 43mm; Overall Height: 85mm(From top to bottom); Inner Diameter: 35mm; ; It will allow your motor bike to do deep breath and generate much more power