Twin Air Filter, 150209: CRF250R 04-09/CRF450R 03-08

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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 air flow than "two separate layer" filters (flow bench proven). Twin air filters are slightly smaller than stock, making them easier to change while increasing dead air space around the filter for better performance. Show more