If a rain coat is important in the rain and a dust mask is important in dusty conditions, then you know EXACTLY what an Outerwears Pre-Filter does…and why it’s so important. Your first line of defense for your air filter, Outerwears act as a stop for dust particles and water getting into your air filter and add life to your filter by keeping much of the debris from ever entering. Machines operate on clean air…and the cleaner the air, the better the performance. Many of the products that are on your ATV were originally developed for another segment of the market and then modified to cross over to Off-Road. 25 years of development was put into development of Outerwears Pre-Filters FOR OFF-ROAD USE! So, Outerwears were designed with YOU in mind! In short, an Outerwear will extend the life and efficiency of your air filter, allowing your ATV to perform at a higher level for a longer period of time. How could you go wrong? APPLICATIONS: YAMAHA 400 KODIAK (00-02)