The DNA air filter is a high-flow filter designed to fit the factory airbox of the Smart City Coupe. It is washable and reusable, and is designed to increase horsepower and acceleration while providing filtration.
- Type: High-flow air filter
- Fitment: Smart City Coupe 0.7L 450 03–04
- Application: Fits the factory airbox
- Features: Washable and reusable