The Hiflofiltro HFF5018 motorcycle air filter is a direct replacement for the original equipment filter and fits in the stock airbox. It is a two-stage filter for motocross and enduro use, featuring dual-layer foam that allows airflow while filtering out contaminants.
- Type: Two-stage air filter
- Filter material: Dual-layer foam
- Fitment: Stock airbox
- Use: Motocross and enduro
- Compatibility: KTM 450 SX