DNA PERFORMANCE AIR FILTER SUZUKI KATANA 1000 2019-20. DNA PERFORMANCE AIR FILTER SUZUKI KATANA 1000 This filter features DNA®’s advanced FCd (Full Contour design). Installation of this DNA Air filter is very easy; simply follow the installation instructions included in the Suzuki workshop manual. The filtering efficiency is extremely high at 98-99% filtering efficiency (ISO 5011), with 4 layers of DNA® Cotton. The flow of this new DNA filter is +51.45% more than the stock SUZUKI filter! DNA PERFORMANCE AIR FILTER SUZUKI KATANA 1000. This filter features DNA®’s advanced FCd (Full Contour design). DNA air filter flow: 182.20 CFM. SUZUKI stock filter’s flow: 120.30 CFM. This DNA® filter is designed as a High Flow Air filter for:’Road & Race use’. No additional information at this time. You might also like. IXIL Hyperlow Dual Exit Silencer HONDA CBR125R 2011-16. IXIL L2X Hyperlow Full System – Honda MSX125 2021-23. IXIL Race Xtrem Carbon Full System Yamaha MT-09 / SP 2021-23. IXIL Black Full System Low mount – Honda Monkey 125 2018-23.