Twin Air Fuel Filter - KTM SX-F 250/350/450 2011/2012 KTM Freeride 350 2013/2017You'd be amazed at the dirt and debris that can work its way into your fuel can , and from there, your fuel tank. Twin Air's monofilament screen pocket inserts in your tank to catch particles as small as 40 microns (. 00165) while allowing the gas to flow freely. The flange is custom sized for each modern 4 stroke model to ensure a leak proof seal. Just remove the filter periodically, turn it inside out, and clean out the debris that COULD have been