This DNA New filter features DNA®’s advanced FCd (Full Contour design).A perfect airtight sealing and trouble free filter installation for the user is guaranteed. 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 (ISO 5011), with 4 layers of DNA® Cotton.DNA Filters are supplied pre-oiled from our factory. The correct amount of DNA oil is applied οn each filter individually.The flow of this new DNA filter is +48.60% more than the stock filter!DNA air filter’s flow: 170.90 CFM (Cubic feet per minute) @1,5"H2O corrected @ 25degrees Celsius.STOCK filter’s flow: 115.00 CFM (Cubic feet per minute) @1,5"H2O corrected @ 25degrees Celsius.This DNA® filter is designed as a High Flow Air filter for: ‘Road, Off Road and Race use’.