Air Fltr Hon Atc 250 '83 150900Air FilterTWIN AIR CLAMP ON AIRFILTER 63MM HONDA ATC 250 (Air Cooled) 1983 84 Dual bonded foam design filters out even the smallest dirt particles, while allowing more airflow than two separate layer filters (flow bench proven). Flat foam sealing ring provides a secure seat against the airbox, even in the worst riding conditions. Twin Air filters are slightly smaller than stock, making them easier to change while increasing dead air space around the