ADV Bum 205 Posted May 22, 2020 I replaced both filters on my KTM 990 Adventure. I did have a Uni pre filter that disintegrated, but the bike was used and I suspect wrong oil caused the problem. I have replaced both the snorkel with a new Uni pre filter as well as a sock. I figured the sock would keep any wires that rubbed on the foam filter from tearing it. I also replaced the paper filter with a Uni filter ordered from CJ designs. CJ Designs ships them in from AU. This time I know the right oil is being used and I can see how long they last. I have a back up for each so I can replace right away without waiting to clean and dry the dirty ones. It should breathe much better. Share this post Link to post Share on other sites
KTMrad 565 Posted May 22, 2020 They should last 100,000 miles with proper care, proper oil. Share this post Link to post Share on other sites