Honda CRF50 2005 Twin Air Filter

XR/CRF50/70 Clamp-On .40mm 2000 - 2020,

Twin Air Foam Air Filter 
Twin-Air dual-stage filters are used by factory race teams and leading riders around the world

Dual-bonded foam design removes even microscopic dirt particles, yet allows more airflow than regular two- separate-layer filters (flow bench tested) Twin Air filters run slightly smaller than stock, making them easier to change and increasing the dead air space around the filter for better performance
Note: Clamp-on for .40mm oversize carb