Features: The air filter prevents abrasive particulate matter from entering the engine;cylinders to ultimately increase horsepower, torques and improve the mileage. Made of high quality materials, the air filter is durable in use. Comes with clamp and flush rubber adapters for easily use and adjusting. easily to fit, can be secured tightly onto your vehicle pipe, and you can adjust to the size required with flat head screwdriver. Fits for most Motorcycle ATV Dirt Pit Bike. Specifications: Material:Metal Color:Red,Black Type:38mm 42mm 45mm 50mm 55mm 60mm (optional) Note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Motorcycle Air Filter