The K&N Universal Air Filter, RE-0930, is part of a line designed and manufactured for a wide variety of applications, including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors and more. It is constructed with ultra-strong molded pliable rubber flanges, which absorb vibration. This feature also allows for secure attachment and can also be stretched for up to 1/16"(1.5mm) to fit in-between sizes. The K&N air filter helps increase horsepower and acceleration to ensure your engine delivers superior performance. A washable design allows you to reuse it again and again. The clamp-on design of the rubber filter adds ease to the installation process. It is made with a rubber top and cotton gauze for filtration without restricting air flow. Other sizes and shapes are available, so you can find the right fit for your needs.