YFZ450R UNI & Pro Design Air FilterThis UNI filter offers Increased filter area while increasing airflow and horsepower. Clamp on design eliminates any debris passing by the air filter media. Unsurpassed in airflow, dirt stopping, and overall performance. The UNI Air Filter can be easily washed and re oiled. Specifically designed to work with the GYTR Billet Air Filter Adaptor Plate, without the costly expense of the GYTR filter! The Pro Design Filter is designed to work with the RRP