DNA Air Filters - Air Filter for BMW R 18 20-23 Options:Air Filter Durable strap replaces winch rope

Durable strap replaces winch rope for plow lifting duties

29% more than the stock filters

the 4-TRACK and SPS CARBON exhausts

1-1/2" gauge face

DNA Air Filters - Air Filter for BMW R 18 20-23 Options:Air Filter Durable strap replaces winch ropeThis filter features DNAs advanced FCd (Full Contour design) Installation of this DNA Air filter is very easy; simply follow the installation instructions included in the BMW 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 filters' set is +22. 35% more than the stock filters'! DNA air filters' flow: 124. 30 CFM (Cubic feet per minute) @1,5H2O