Installation of this new DNA Air filter is very easy; simply follow the installation instructions included in the workshop manual The filtering efficiency is extremely high at 98-99% filtering efficiency, with 4 layers of DNA® Cotton. The flow of this new DNA filter is +45.15% more than the stock filter! DNA Performance Air Filter Kawasaki Z900. This filter features DNA®’s advanced FCd1 (Full Contour design). Installation of this new DNA Air filter is very easy; simply follow the installation instructions included in the workshop manual. The filtering efficiency is extremely high at 98-99% filtering efficiency, with 4 layers of DNA® Cotton. DNA air filter flow: 190.30 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 2018-24.