DNA High Performance Air Filter Compatible for BMW F800 GS K72 (08-15) PN: P-BM8S09-01; This DNA filter features DNA's advanced FCd (Full Contour design).\nInstallation of the filter is very easy, simply follow the information that can be found in the workshop manual.\nThe filtering efficiency is extremely high at 98-99% filtering efficiency, with 4 layers of DNA Cotton.\nDNA Fcd air filter flow: 92.05 CFM (Cubic feet per minute) @1,5"H2O corrected @ 25degrees Celsius\nThis DNA filter is designed as a High flow filter for road and off-road use.