DNA Performance Air Filter – KTM 390 Adventure 2020-23. DNA PERFORMANCE AIR FILTER – KTM 390 ADVENTURE This new filter features DNA®’s advanced FCD; (Full Contour Design) Detailed installation info included A specially made laser cut supporting frame is embedded in the DNA Filter The filtering efficiency is extremely high at 98-99% filter efficiency with 4 layers of DNA Cotton The flow of this new DNA filter is +23.87% more than the stock KTM filter DNA Air filter flow – 113.90 CFM (Cubic feet per minute) KTM Stock filter flow – 91.95 CFM (Cubic feet per minute). DNA PERFORMANCE AIR FILTER – KTM 390 ADVENTURE. This new filter features DNA®’s advanced FCD; (Full Contour Design). Detailed installation info included. A specially made laser cut supporting frame is embedded in the DNA Filter. The filtering efficiency is extremely high at 98-99% filter efficiency with 4 layers of DNA Cotton. The flow of this new DNA filter is +23.87% more than the stock KTM filter. DNA Air filter flow – 113.90 CFM (Cubic feet per minute). KTM Stock filter flow – 91.95 CFM. (Cubic feet per minute). No additional information at this time. You might also like. IXIL Race Xtrem Carbon Full System Yamaha MT-09 / SP 2021-23. IXIL Black Hyperlow Full System Yamaha MT-09 / SP 2021-23. IXIL Black Hyperlow Full System Yamaha XSR 900 2022-23. IXIL Black Full System Low mount – Honda Monkey 125 2018-23.