39mm Air Filter for 125 cc 150cc 200 CC ATVs Quad 4 Wheeler Dirt Bikes Pit Bike 125cc Go Karts Dune Buggy Taotao SunL JCL Coolster SSR Roketa Kandi Kinroad BV Powersports DongFang 39mm Air Filter. Top Quality Guaranteed. It fits most Chinese for 125-200CC ATVs & Dirt Bikes, 125cc Go Karts, please check pictures and specifications for compatibility Compatible with 22mm,26mm,27mm caliber of Pull Carburetor with Hand/Cable Choke Inside diameter: 39mm; Higher air flow than normal filter for maximum power; ; Race tested for performance and reliability; Race filters increase air flow by up to 25% over standard filters; High quality ensured