DNA Air Filters - Air Filter for BMW K 1200 S 03-08 (K40) / K 1300 S 07-15 (K40) Options:Air Filter High air flow with exceptional

High air flow with exceptional filtration

super slim ergonomic design

Mounting Size 1/4 in

then reinstall

DNA Air Filters - Air Filter for BMW K 1200 S 03-08 (K40) / K 1300 S 07-15 (K40) Options:Air Filter High air flow with exceptionalThis filter features DNA's Round Design. Installation of the filter is very easy, simply follow the information that can be found in the BMW workshop manual. The filtering efficiency is extremely high at 98 99% filtering efficiency, with 4 layers of DNA Cotton. The flow of this DNA filter set is 10. 68% more than the BMW stock paper filter. DNA air filter flow: 101. 60 CFM (Cubic feet per minute) @1,5"H2O corrected @ 25C. BMW stock paper filter: 91.