TWIN AIR Air Filter - CRF450R 150208 Round Sissy Bar Each set includes two side

Each set includes two side stickers

Compression ratio of 11

especially when changing out the cam for something a little more aggressive

carry more speed

This super durable

TWIN AIR Air Filter - CRF450R 150208 Round Sissy Bar Each set includes two sideDual bonded foam design filters out even the smallest dirt particles, while allowing more airflow than two separate layer filters (flow bench proven)Twin Air filters are slightly smaller than stock to make them easier to change and to increase dead air space around the filter for better performance Flat foam sealing ring securely seats against the airbox, even in the worst riding conditions