The DNA air filter is a free-flow filter designed for the factory airbox of the 2010 Ford Focus RS 500 2.5 L petrol model. It is washable and reusable, and is designed to increase horsepower and acceleration while providing filtration.
- Type: Free-flow air filter
- Fitment: 2010 Ford Focus RS 500 2.5 L petrol
- Installation: Fits the factory airbox
- Reusable: Washable and reusable