The Twin Air air filter for Yamaha WR features a dual-layer design, with an outer layer made of coarser foam that prevents dirt, dust, and sand from entering. The inner layer of fine foam filters smaller particles while allowing airflow.
The dense bonding layer acts as a breathable barrier: it lets air pass through while limiting the entry of dirt and dust.
- Type: Motorcycle air filter
- Construction: Dual-layer
- Outer layer material: Coarser foam
- Inner layer material: Fine foam
- Compatibility: Yamaha WR, Yamaha WR 450F