Twin Air Power Flow Kit Replacement Filter 154222CNOTE: Filter only for use with Twin Air Power Flow kits. Twin Air dual stage filters are the choice of top factory teams and riders worldwide 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