Asdomo Dirt Pit Air Filter Cleaner for Tube Gauze Moped Scooter Atv Dirt Bike Motorcycle Air Filter 35mm Designed to increase horsepower and acceleration. Hundreds of sizes and shapes for most applications. High air flow with excellent filtration. It fits for most Chinese 50-110cc ATVs & Dirt Bikes &Pit Bike &Go Kart.May also fit some Japanese Style. Race filters increase air flow by up to 25% over standard filters.