The Hiflofiltro HFF4018 motorcycle air filter directly replaces the original equipment filter and fits the factory airbox. The two-stage filter uses specially designed dual-layer foam for filtration and airflow in MX and Enduro applications.
- Filter type: Air
- Filtration stages: 2
- Filter material: Dual-layer foam
- Installation: In the factory airbox
- Compatibility: Yamaha TTR, Yamaha WR 250
- Compatible years: Yamaha TTR 2000–2006, Yamaha WR 250 2008–2013