The Twin Air PowerFlow Air Filter is a great way to boost the horsepower and performance of your motorcycle. Twin Air designed their PowerFlow Air Filter to be used exclusively with the Twin Air PowerFlow Kit. The special backfire-resistant layer of foam laminated to the inside of the filter makes the Twin Air PowerFlow filter a quick, ready-to-install assembly. The same factory treatment that race teams and O.E.M.'s receive is now available for all Twin Air users. Comes in a new, re-sealable bag for added convenience. Filter ONLY for use with Twin Air PowerFlow kits. Note: Image is for representation, actual product may very depending on application.